— training miles since June 1 · the 10,000 start Jan 1

September 2027 bike rides & races

96 rides and races · 5 with the organizer’s date

organizer’s dateprojected from 2026, check first

Narrow by type, region, cause, distance →

1Sep
1–5 ~
DALMAC 2027 (56th) - Dick Allen Lansing to MACkinawLansing → Mackinaw City · multi-day tour · 5 days · 5-Day West 325 mi; 5-Day East 282/308; 5-Day East Gravel…Details
Dates
Wed, Sep 1 – Sun, Sep 5, 2027 · projected (2026 was Sep 2–6)
Where
Lansing, MI
Route
Lansing (MSU Pavilion) → Mackinaw City
Distances
5-Day West 325 mi; 5-Day East 282/308; 5-Day East Gravel 306/333; 4-Day West 322/402; 3-Day East 165/182; 2-Day East 105/131; 2-Day Trail 84
Format
point-to-point camping tour (2-5 day routes)
Cause
DALMAC Fund (bicycle safety/infrastructure grants in Michigan, $2M+ granted)
Cost
varies by route (not extracted); described as one of the lowest-cost tours
Organizer
Tri-County Bicycle Association (all-volunteer)
Registration
2026 registration closed; 2027 opens in spring (typically March)

Date2026 (55th) was September 2-6, 2026 (Wednesday-Sunday ending the Sunday before Labor Day). Labor Day 2027 is Sept 6, so Sept 1-5, 2027 is projected; not yet announced by TCBA.

Notes~1,500 riders; SAG, baggage transport, mechanics, camping, showers, breakfast and dinner included.

2Thu
Sep ~
Smoke 'n' Fire 400Boise, ID · ultra / bikepacking · 4 days · ~400 mi, ~41,000 ft; two-track, gravel, singletrack…Details
Dates
Thu, Sep 2, 2027 · projected (2026 was Sep 3)
Where
Boise, ID
Distances
~400 mi, ~41,000 ft; two-track, gravel, singletrack; free, no support, no prizes
Format
self-supported Idaho backcountry race
Organizer
Norb DeKerchove
Registration
No fee; sign-up via organizer site
Qualification
None (self-supported grand depart)

DateStarts the first Thursday of September from Hyde Park, Boise (2026: Thu Sept 3, 2026, 6am; 2025: Sept 4; 2024: Sept 5). 2027 projected Thu Sept 2, 2027. Not yet announced.

3Sep
3–6 ~
Gateway CupSt. Louis, MO · race · series · 4 days · Four criteriums for pro-am and USAC categoriesDetails
Dates
Fri, Sep 3 – Mon, Sep 6, 2027 · projected
Where
St. Louis, MO
Distances
Four criteriums for pro-am and USAC categories
Format
4-day criterium series (Labor Day weekend)
Organizer
Gateway Cup / Big Shark Bicycle Co.
Qualification
USA Cycling license

DateHeld every Labor Day weekend (Fri-Mon) in St. Louis neighborhoods (Lafayette Square, Francis Park, The Hill/Giro della Montagna, Benton Park); 2027 projected Sept 3-6, 2027. Not yet announced.

3Sep
3–6 ~
Green Mountain Stage Race (GMSR)Waitsfield / Burlington, VT · race · stage race · 4 days · Circuit race/TT, Mad River road race, Appalachian Gap…Details
Dates
Fri, Sep 3 – Mon, Sep 6, 2027 · projected (2026 was Sep 4–7)
Where
Waitsfield / Burlington, VT
Distances
Circuit race/TT, Mad River road race, Appalachian Gap road race, Burlington criterium; all USAC categories
Format
4-day amateur/pro stage race
Organizer
Green Mountain Stage Race
Registration
2027 TBA
Qualification
USA Cycling license

DateGMSR is always held over Labor Day weekend (Fri-Mon); 2027 Labor Day is Sept 6, so projected Sept 3-6, 2027. 2026 edition expected Sept 4-7, 2026; organizer has not published 2027.

4Sat
Sep ~
Maryland Cycling ClassicBaltimore, MD · race · ~195 km UCI ProSeries one-day race (men)Details
Dates
Sat, Sep 4, 2027 · projected (2026 was Sep 5)
Where
Baltimore, MD
Distances
~195 km UCI ProSeries one-day race (men)
Format
UCI 1.Pro one-day men's race (Baltimore)
Organizer
Maryland Cycling Classic (Kelly Benefits / Sport & Entertainment Corp. of Maryland)
Registration
n/a (pro)
Qualification
UCI WorldTeams/ProTeams/Continental teams by invitation

Date2026 edition Sat Sept 5, 2026 (UCI 1.Pro). The race is held on Labor Day weekend; 2027 projected Sat Sept 4, 2027.

4Sat
Sep ~
Mt. Ascutney Bicycle HillclimbWindsor, VT · hill climb · 3.5 miles, 2,279 ft, avg 12.4% gradeDetails
Dates
Sat, Sep 4, 2027 · projected (2026 was Sep 5)
Where
Windsor, VT
Distances
3.5 miles, 2,279 ft, avg 12.4% grade
Elevation
2,279 ft
Format
hill climb (auto road)
Organizer
Ascutney Trails Association
Registration
BikeReg

Date2026 edition was Sat Sep 5, 2026 (first Saturday of September); 2027 projected as the same weekend pattern = Sat Sep 4, 2027. Organizer has not published a 2027 date yet. Held Saturday of Labor Day weekend (2026: Sat Sept 5). 2027 Labor Day weekend Saturday = Sept 4, 2027.

NotesBUMPS series event.

4Sat
Sep ~
Shenandoah Mountain 100Mt. Solon, VA · mtb · 100 miDetails
Dates
Sat, Sep 4, 2027 · projected (2026 was Sep 5)
Where
Mt. Solon (Stokesville), VA
Distances
100 mi
Format
NUE 100-mile MTB race
Organizer
Shenandoah Mountain Touring
Series
NUE Series
Lottery
No lottery.

Date2026 edition Sep 5, 2026 (Saturday of Labor Day weekend); 2027 Labor Day weekend Saturday is Sep 4, 2027 -> projected; not announced.

4Sat
Sep ~
Tour de FuzzSanta Rosa, CA · road · 50 km, 100 km, 100 miDetails
Dates
Sat, Sep 4, 2027 · projected (2026 was Sep 5)
Where
Santa Rosa, CA
Distances
50 km, 100 km, 100 mi
Format
Sonoma County century (benefit for law-enforcement chaplaincy)
Cause
Sonoma County Law Enforcement Chaplaincy Services
Organizer
Tour de Fuzz

Date2026 edition Sat Sept 5, 2026 (Labor Day weekend Saturday). 2027 projected Sept 4.

5Sun
Sep ✓
Bike the DriveChicago, IL · road · Bike advocacy · Up to 30-mile loop on DuSable Lake Shore Drive (ride as…Details
Dates
Sun, Sep 5, 2027
Where
Chicago, IL
Distances
Up to 30-mile loop on DuSable Lake Shore Drive (ride as much or as little as you like); 5 entry points
Elevation
flat
Format
car-free Lake Shore Drive mass ride
Cause
Bike advocacy — Active Transportation Alliance
Organizer
Active Transportation Alliance
Registration
2026 registration closed; 2027 registration not yet open as of Sept 2026 (2026 pricing: $20 adult, $18 youth, $174 family 4-pack)

DateOrganizer site states 'See you on Sunday, September 5, 2027' (Sunday before Labor Day). 2026 edition was Sunday Sept 6, 2026.

Notes~20,000 riders; held since 2002; permanently moved to Labor Day weekend Sunday in 2021.

5Sun
Sep ~
Dakota Five-OSpearfish, SD · mtb · ~50 miDetails
Dates
Sun, Sep 5, 2027 · projected (2026 was Sep 6)
Where
Spearfish, SD
Distances
~50 mi
Format
50-mile Black Hills MTB race
Organizer
Dakota Five-O
Lottery
No lottery.

Date2026 edition Sep 6, 2026 (Sunday of Labor Day weekend) -> Sep 5, 2027 projected; not announced.

5Sun
Sep ~
Wright Stuff CenturyDane/Iowa County, WI · road · 35, 65, 100 miDetails
Dates
Sun, Sep 5, 2027 · projected (2026 was Sep 6)
Where
Dane/Iowa County (Madison area), WI
Distances
35, 65, 100 mi
Elevation
~65 ft/mi rolling Driftless
Format
club century (Taliesin)
Cause
Bikes for Kids Wisconsin
Organizer
Bombay Bicycle Club (Madison)

DateProjected: Sunday of Labor Day weekend (2026 edition Sunday Sept 6, 2026). No 2027 date published.

NotesRoute past Frank Lloyd Wright's Taliesin.

8Sep
8–11 ~
Rebecca's Private Idaho (site now redirects to 'The Big Lost')Ketchum / Sun Valley, ID · gravel · 4 days · Baked Potato 100–104 mi; Fully Loaded Potato 118 mi (new…Details
Dates
Wed, Sep 8 – Sat, Sep 11, 2027 · projected (2026 was Sep 9–12)
Where
Ketchum / Sun Valley, ID
Distances
Baked Potato 100–104 mi; Fully Loaded Potato 118 mi (new 2026); French Fry 56 mi; Tater Tot 20 mi; Harriman Trail 35 mi and Dollarhide Summit TT (Queen's Stage Race stages)
Format
multi-day gravel festival + Queen's Stage Race
Cause
Be Good Foundation
Organizer
Rusch Ventures (Rebecca Rusch) with Bike Monkey
Registration
2026 registration opened Nov 17, 2025; 2027 not announced. ~1,200–1,500 cap.
Lottery
No lottery.

Date2026 edition moved off Labor Day to Sep 9–12, 2026 (Wed–Sat). No 2027 dates published; same-week pattern gives Sep 8–11, 2027. IMPORTANT: rebeccasprivateidaho.com and rebeccarusch.com/track-rpi now 302-redirect to thebiglost.com, which suggests a rebrand to 'The Big Lost'.

NotesFounded 2013.

CheckNot checked with the organizer yet. Look at their site before you plan around it.

10Sep
10–13 ✓
Hoodoo 500St. George, UT · ultra / bikepacking · 4 days · 500 mi (solo, tandem, 2- and 4-person teams; non-stop or…Details
Dates
Fri, Sep 10 – Mon, Sep 13, 2027
Where
St. George, UT
Distances
500 mi (solo, tandem, 2- and 4-person teams; non-stop or 3-day stage), 400 mi (solo/tandem/2-person; non-stop or NEW 2-day stage race for 2027), 300 mi (solo/tandem/2-person; non-stop or 2-day stage); 46-50 hr limits for non-stop 500; Voyager self-supported (drop-bag) solo divisions
Format
ultra-distance road race (500/400/300 mi; non-stop or stage)
Organizer
Planet Ultra
Registration
Registration open for 2027 via BikeSignup (bikesignup.com/Race/UT/StGeorge/Hoodoo500)
Qualification
Open entry; the 500-mile non-stop race is a RAAM qualifier

DateOfficial site states '21st Annual Race: September 10-13, 2027' with a date change from the traditional late-August weekend 'to avoid conflict with 2027 Paris-Brest-Paris'. 2026 edition was Aug 28-31, 2026.

NotesLoop through southern Utah passing Zion/Bryce/Cedar Breaks/Capitol Reef country; ~500 mi with ~30,000 ft climbing.

10Sep
10–12 ~
Recovery Ride (Castro Country Club)Robert’s rideSan Francisco, CA · charity ride · Recovery · 3 days · Sausalito → Guerneville (Marin/Sonoma hills) day 1… · raise $1,500Details
Dates
Fri, Sep 10 – Sun, Sep 12, 2027 · projected (2026 was Sep 11–13)
Where
San Francisco, CA
Route
Sausalito → Sausalito (via Guerneville)
Distances
Sausalito → Guerneville (Marin/Sonoma hills) day 1; off-bike recovery day (meetings, speakers) day 2; coastal return day 3
Format
Addiction-recovery / LGBTQ sober-community multi-day (3-day)
Cause
Recovery — Castro Country Club (sober LGBTQ community space in San Francisco's Castro district)
Min. fundraising
$1,500
Organizer
Castro Country Club
Registration
Organizer page says 'Registration Opens Friday, October 2' (no year shown; Oct 2, 2026 is a Friday). Not open as of Oct 1, 2026; 2027 ride dates not yet published.

DateInaugural ride was Sept 11–13, 2026 (SFAF/Castro Country Club announcement). Projected to the equivalent weekend in 2027 (Sept 10–12); no 2027 date announced yet — first-year event, so low confidence. Organizer's Recovery Ride page (Oct 1, 2026) now carries Year 2 / 2027 branding and the line 'Registration Opens Friday, October 2' (Oct 2, 2026 is a Friday) but still gives no 2027 ride dates; its Training page is still the 2026 version.

NotesFully supported, camping in Guerneville, $1,500 minimum; sober LGBTQ+ community ride benefiting Castro Country Club. SFAF calls it a complementary event to Cycle to Zero. Organizer contact: cccrecoveryride@gmail.com.

10Fri
Sep ~
TATR - The Adirondack Trail RideNorthville, NY · ultra / bikepacking · 6 days · 585 mi (941 km)Details
Dates
Fri, Sep 10, 2027 · projected (2026 was Sep 11)
Where
Northville, NY
Distances
585 mi (941 km)
Format
self-supported Adirondack loop
Organizer
TATR organizers
Qualification
None (self-supported)

Date2026 grand depart Sept 11, 2026 (Fri) from Northville, NY. 2027 projected to the equivalent second Friday of September (Sept 10, 2027); not yet announced.

11Sep
11–17 ✓
Bike the US for MS - Vermont Gravel RideBurlington, VT · charity ride · MS · 7 days · 253 miDetails
Dates
Sat, Sep 11 – Fri, Sep 17, 2027
Where
Burlington, VT
Route
Burlington, VT (loop) → Burlington, VT
Distances
253 mi
Format
MS multi-day/multi-week self-contained charity tour
Cause
MS — Bike the US for MS (MS research and community-service projects)
Min. fundraising
Organizer requires per-mile fundraising
Organizer
Bike the US for MS
Registration
2027 routes listed

Date2027 dates published on the Bike the US for MS routes page.

NotesSmall-group, self-contained charity tours.

11Sat
Sep ~
DAM J.A.M. Bicycle TourPryor, OK · road · 33, 55, 73 and 105 milesDetails
Dates
Sat, Sep 11, 2027 · projected (2026 was Sep 12)
Where
Pryor, OK
Distances
33, 55, 73 and 105 miles
Format
Green Country century (Pryor)
Organizer
DAM J.A.M. Bicycle Tour (Pryor)

Date2026 edition was Sat Sep 12, 2026 (second Saturday of September); 2027 projected as the same weekend pattern = Sat Sep 11, 2027. Organizer has not published a 2027 date yet.

Notes35th year in 2026.

11Sat
Sep ~
Fool's GoldDahlonega, GA · mtb · 100/50 mi optionsDetails
Dates
Sat, Sep 11, 2027 · projected (2026 was Sep 12)
Where
Dahlonega, GA
Distances
100/50 mi options
Format
Georgia endurance MTB race
Organizer
Mountain Goat Adventures
Lottery
No lottery.

Date2026 edition Sep 12, 2026 -> second Saturday of September 2027 projected; not announced.

11Sep
11–12 ~
Georgia Time Trial Endurance Challenge (6/12/24-hour)GA · ultra / bikepacking · 24-hour · 24-hour, 12-hour and 6-hour timed eventsDetails
Dates
Sat, Sep 11 – Sun, Sep 12, 2027 · projected (2026 was Sep 12–13)
Where
GA
Distances
24-hour, 12-hour and 6-hour timed events
Format
6/12/24-hour timed time trial
Organizer
Georgia TT Endurance Challenge organizers
Registration
2027 TBA
Qualification
Open entry

Date2026 edition Sept 12-13, 2026. 2027 projected to the equivalent second weekend of September.

11Sat
Sep ~
Grinduro CaliforniaQuincy, CA · gravel · Bike advocacy · 2 days · Grinduro 51 mi / 7,200 ft with 4 timed segments…Details
Dates
Sat, Sep 11, 2027 · projected (2026 was Sep 12)
Where
Quincy, CA
Distances
Grinduro 51 mi / 7,200 ft with 4 timed segments; Grindurito 23 mi / 2 segments
Format
gravel enduro (timed segments)
Cause
Bike advocacy — Sierra Buttes Trail Stewardship
Organizer
Sierra Buttes Trail Stewardship (Grinduro)
Series
Grinduro (global series)
Registration
BikeReg; camping included; 2027 not open.
Lottery
No lottery.

Date2026 edition Sep 12, 2026 at Plumas-Sierra County Fairgrounds, Quincy (second Saturday of September). No 2027 date published -> Sep 11, 2027 projected.

11Sat
Sep ~
Hancock Horizontal HundredFindlay, OH · road · 15 (free community ride), 30, 62, 100 miDetails
Dates
Sat, Sep 11, 2027 · projected (2026 was Sep 12)
Where
Findlay, OH
Distances
15 (free community ride), 30, 62, 100 mi
Elevation
Ohio's flattest century
Format
flat century
Organizer
Making Miles Matter
Registration
2026 via BikeReg

DateProjected: 2nd Saturday of September (2026 edition Saturday Sept 12, 2026). Organizer says 2027 will add timing and 'more than one Saturday' of programming; no date published.

11Sat
Sep ~
Kelly Brush RideMiddlebury, VT · charity ride · Other · 20, 50, 100 mi road; 30 mi gravel; remote optionDetails
Dates
Sat, Sep 11, 2027 · projected (2026 was Sep 12)
Where
Middlebury, VT
Distances
20, 50, 100 mi road; 30 mi gravel; remote option
Format
spinal cord injury one-day ride
Cause
Other — Kelly Brush Foundation (spinal cord injury / ski-racing safety)
Min. fundraising
Not published yet
Organizer
Kelly Brush Foundation

DateProjected to Sat Sep 11, 2027.

CheckNot checked with the organizer yet. Look at their site before you plan around it.

11Sat
Sep ~
LOTOJA ClassicLogan to Jackson Hole, WY, UT · road · Cancer · 202-208 mi depending on category; 3 states, 3 mountain…Details
Dates
Sat, Sep 11, 2027 · projected (2026 was Sep 12)
Where
Logan (start) to Jackson Hole, WY (finish), UT
Distances
202-208 mi depending on category; 3 states, 3 mountain passes
Elevation
~10,000 ft
Format
200+ mile one-day Logan UT to Jackson Hole WY (race + cyclosportive + relay)
Cause
Cancer — Huntsman Cancer Foundation (fundraising optional)
Organizer
LOTOJA Classic LLC (director Brent Chambers)
Registration
Registration historically opens in spring with a lottery/first-come sell-out (~1,300-1,500 riders)

Date44th edition confirmed Sat Sept 12, 2026. LOTOJA is held the Saturday after Labor Day.

NotesIncludes USAC-licensed race categories; the cyclosportive/relay side makes it a signature mass-participation event.

11Sat
Sep ~
Mammoth Gran FondoMammoth Lakes, CA · road · Community · 102 mi Gran, 70 mi Medio, 42 mi PiccoloDetails
Dates
Sat, Sep 11, 2027 · projected (2026 was Sep 12)
Where
Mammoth Lakes, CA
Distances
102 mi Gran, 70 mi Medio, 42 mi Piccolo
Format
closed-road high-Sierra gran fondo
Cause
Community — Mammoth Mountain Community Foundation
Organizer
Mammoth Mountain Community Foundation (presented by Hyundai)
Registration
2026 open; ~1,800-rider cap

Date2026 edition confirmed Sat Sept 12, 2026 (2nd Saturday of September).

Notes~75 mi of the Gran route closed to through traffic; mass start from The Village.

11Sat
Sep ~
Michigan Gravel Race Series – Lord of the SpringsMichigan, MI · gravel · MultipleDetails
Dates
Sat, Sep 11, 2027 · projected (2026 was Sep 12)
Where
Michigan, MI
Distances
Multiple
Format
series round
Organizer
MGRS
Series
Michigan Gravel Race Series
Lottery
No lottery.

Date2026 edition Sep 12, 2026 -> Sep 11, 2027 projected; not announced.

11Sat
Sep ~
Mount Greylock Hillclimb Time TrialNorth Adams, MA · hill climb · 9 miles to the summit of Mt. Greylock (3,491 ft)Details
Dates
Sat, Sep 11, 2027 · projected (2026 was Sep 12)
Where
North Adams, MA
Distances
9 miles to the summit of Mt. Greylock (3,491 ft)
Elevation
~2,800 ft gain
Format
hill climb time trial
Organizer
Northampton Cycling Club
Registration
Registration via bikereg.com/greylock

Date2026 edition was Sat Sep 12, 2026 (second Saturday of September); 2027 projected as the same weekend pattern = Sat Sep 11, 2027. Organizer has not published a 2027 date yet. 2026 edition Sept 12, 2026 from Western Gateway Heritage State Park.

NotesBUMPS series event.

11Sat
Sep ~
Northfield Rotary Bike Tour (formerly Jesse James Bike Tour)Northfield/Dundas, MN · road · Community · Road 20-100 mi, gravel routes, 6-mi family rideDetails
Dates
Sat, Sep 11, 2027 · projected (2026 was Sep 12)
Where
Northfield/Dundas, MN
Distances
Road 20-100 mi, gravel routes, 6-mi family ride
Elevation
rolling
Format
road/gravel/family tour during Defeat of Jesse James Days
Cause
Community — Rotary Club of Northfield
Organizer
Rotary Club of Northfield

DateProjected: Saturday of Defeat of Jesse James Days (2nd weekend of Sept; 2026 edition Saturday Sept 12, 2026). No 2027 date published.

NotesRotary took over the former Jesse James Bike Tour; 4th year under Rotary in 2026.

11Sat
Sep ~
Passport to PainVashon Island, WA · road · 30, 50 and 80 milesDetails
Dates
Sat, Sep 11, 2027 · projected (2026 was Sep 12)
Where
Vashon Island, WA
Distances
30, 50 and 80 miles
Elevation
3,400 ft (30mi) / 6,500 ft (50mi) / 10,000 ft (80mi)
Format
extreme climbing challenge ride
Cause
Vashon Island Rowing Club
Organizer
Vashon Island Rowing Club
Registration
2027 registration not yet open as of Sept 2026

DateHeld Sat Sept 12, 2026.

NotesStart at Jensen Point, 8900 SW Bayview Dr, Vashon Island. 18 passport checkpoints stamped along the route. Explicitly NOT a race or timed/sanctioned ride; described as extremely strenuous. Includes BBQ dinner, t-shirt, water bottle.

11Sat
Sep ~
Race the Rails (Ely)Ely, NV · roadDetails
Dates
Sat, Sep 11, 2027 · projected (2026 was Sep 12)
Where
Ely, NV
Format
ride/race against a 100-year-old steam locomotive; road and MTB options
Organizer
Ely / White Pine County tourism

Date2026 edition Sat Sept 12, 2026 (2nd Saturday of September).

11Sep
11–12 ~
Roscoe RambleCanal Fulton/Kidron to Coshocton, OH · road · 2 days · ~75 mi/day long route (150 total) or ~55 mi/day short…Details
Dates
Sat, Sep 11 – Sun, Sep 12, 2027 · projected (2026 was Sep 12–13)
Where
Canal Fulton/Kidron to Coshocton, OH
Distances
~75 mi/day long route (150 total) or ~55 mi/day short route (110 total)
Elevation
hilly Amish country
Format
two-day out-and-back tour
Organizer
Akron Bicycle Club
Registration
2026: $117 members/$129 non-members; capacity limited by hotel rooms; registration closed Sept 1

DateProjected: 2nd weekend of September (2026 edition Sept 12-13, 2026). No 2027 date published.

Notes52nd annual in 2026.

11Sat
Sep ~
Tour of the MoonGrand Junction, CO · road · 41 and 64 milesDetails
Dates
Sat, Sep 11, 2027 · projected (2026 was Sep 12)
Where
Grand Junction (Colorado National Monument), CO
Distances
41 and 64 miles
Elevation
Substantial - the route climbs Rim Rock Drive through Colorado National Monument
Format
national monument scenic ride
Cause
A portion of proceeds supports One Riverfront and Bicycle Colorado
Organizer
The Ride Collective
Registration
2027 registration not yet open as of Sept 2026

DateThe Ride Collective ran the 2026 edition on Sat Sept 12, 2026; the ride is held on a September Saturday, so Sat Sept 11, 2027 is the projection.

NotesRIDER CAP 2,000. Start/finish at Two Rivers Convention Center, 159 Main St, Grand Junction. Named for the lunar-looking red rock landscape; the route featured in the 1985 film American Flyers. Formerly part of the Roll Massif series.

12Sun
Sep ~
Buffalo Bicycle ClassicBoulder, CO · road · Community · Multiple routes, historically from a short family ride up…Details
Dates
Sun, Sep 12, 2027 · projected (2026 was Sep 13)
Where
Boulder, CO
Distances
Multiple routes, historically from a short family ride up to a 100-mile century (commonly 14, 35, 50, 70 and 100 miles)
Elevation
Rolling Boulder County foothills; the longer routes climb into the foothills north and west of Boulder
Format
scholarship-benefit century
Cause
Community — CU Boulder College of Arts and Sciences scholarship fund
Organizer
University of Colorado Boulder
Registration
2027 registration not yet open as of Sept 2026; registration via BikeSignup/GiveSignup

DateNo 2027 date published. The 2026 edition was Sun Sept 13, 2026; the ride is held on a September Sunday, so Sun Sept 12, 2027 is the projection.

NotesStart/finish on the CU Boulder campus. Has raised millions for need-based scholarships since 2003; the ride's identity is a Boulder century, with the scholarship funding as the beneficiary.

12Sun
Sep ~
Cabot Ride the RidgesCabot, VT · road · Multiple routes (per GF Guide calendar)Details
Dates
Sun, Sep 12, 2027 · projected (2026 was Sep 13)
Where
Cabot, VT
Distances
Multiple routes (per GF Guide calendar)
Format
road/mixed ride in Vermont's Northeast Kingdom
Organizer
Cabot community event

Date2026 edition was Sun Sep 13, 2026 (second Sunday of September); 2027 projected as the same weekend pattern = Sun Sep 12, 2027. Organizer has not published a 2027 date yet.

NotesSome routes include dirt roads.

CheckNot checked with the organizer yet. Look at their site before you plan around it.

12Sun
Sep ~
California Classic Century (Fresno)Fresno, CA · road · Children · 35, 60, 100 miDetails
Dates
Sun, Sep 12, 2027 · projected (2026 was Sep 13)
Where
Fresno, CA
Distances
35, 60, 100 mi
Format
Fresno foothills century (California Classic Weekend)
Cause
Children

Date2026 edition Sun Sept 13, 2026 (35/60/100 mi) (2nd Sunday of September). 2027 projected Sept 12.

12Sun
Sep ~
Connecticut Valley CenturyHatfield, MA · road · Century and shorter (per GF Guide calendar)Details
Dates
Sun, Sep 12, 2027 · projected (2026 was Sep 13)
Where
Hatfield, MA
Distances
Century and shorter (per GF Guide calendar)
Format
club century
Organizer
Franklin-Hampshire Freewheelers (per event history)

Date2026 edition was Sun Sep 13, 2026 (second Sunday of September); 2027 projected as the same weekend pattern = Sun Sep 12, 2027. Organizer has not published a 2027 date yet.

CheckNot checked with the organizer yet. Look at their site before you plan around it.

12Sun
Sep ~
Door County CenturySturgeon Bay, WI · road · Community · 30, 50, 70, 100 miDetails
Dates
Sun, Sep 12, 2027 · projected (2026 was Sep 13)
Where
Sturgeon Bay, WI
Distances
30, 50, 70, 100 mi
Elevation
rolling
Format
large century (sells out)
Cause
Community
Organizer
Door County Century (founded by Bay Shore Bicycle Club)
Registration
Cap 3,000; sells out each year

DateProjected: 2nd Sunday of September (2026 edition Sunday Sept 13, 2026).

Notes47th edition in 2026; one of the largest single-day rides in the US.

12Sun
Sep ~
Mt. Baker Hill ClimbGlacier / Deming, WA · hill climb · 22 milesDetails
Dates
Sun, Sep 12, 2027 · projected (2026 was Sep 14)
Where
Glacier / Deming (Mt. Baker Highway), WA
Distances
22 miles
Elevation
4,462 ft (Chair 9 in Glacier to Artist Point, 5,140 ft)
Format
timed mass-start hill climb
Organizer
Mt. Baker Hill Climb (Kulshan Cycles / local organizers)
Registration
2027 registration not yet open as of Sept 2026

DateThe 2026 edition was Sun Sept 14, 2026; the event runs on a September Sunday, so Sept 12, 2027 is consistent but not organizer-confirmed.

NotesSELLS OUT EVERY YEAR - field limited to ~450 riders; 2024, 2025 and 2026 editions all sold out. Widely described as one of the most scenic paved climbs in the US. Start at 10459 Mt Baker Hwy, Deming, WA.

12Sun
Sep ~
Saint Paul Classic Bike TourSaint Paul, MN · road · 12.8/15.8 mi short; 30/33 mi Grand RoundDetails
Dates
Sun, Sep 12, 2027 · projected (2026 was Sep 13)
Where
Saint Paul, MN
Distances
12.8/15.8 mi short; 30/33 mi Grand Round
Elevation
mostly flat
Format
car-free parkway tour
Organizer
Saint Paul Parks and Recreation
Registration
2026 registration closed

DateProjected: 2nd Sunday of September (2026 edition Sunday Sept 13, 2026). No 2027 date published.

12Sun
Sep ~
Scenic Schuylkill CenturyConshohocken, PA · road · 23, 40, 42, 64, 78, 100 milesDetails
Dates
Sun, Sep 12, 2027 · projected (2026 was Sep 13)
Where
Conshohocken, PA
Distances
23, 40, 42, 64, 78, 100 miles
Format
club century
Organizer
Bicycle Club of Philadelphia
Registration
2026 open

Date2026 edition was Sun Sep 13, 2026 (second Sunday of September); 2027 projected as the same weekend pattern = Sun Sep 12, 2027. Organizer has not published a 2027 date yet. Traditionally the Sunday after Labor Day (2025: Sept 7; 2026: Sept 13), which gives Sept 12, 2027.

NotesStarts at AIM Academy, Conshohocken.

12Sun
Sep ~
Shenandoah Valley CenturyHarrisonburg, VA · road · Century plus shorter (per GF Guide calendar)Details
Dates
Sun, Sep 12, 2027 · projected (2026 was Sep 13)
Where
Harrisonburg, VA
Distances
Century plus shorter (per GF Guide calendar)
Format
club century
Organizer
Shenandoah Valley Bicycle Coalition (per event history)

Date2026 edition was Sun Sep 13, 2026 (second Sunday of September); 2027 projected as the same weekend pattern = Sun Sep 12, 2027. Organizer has not published a 2027 date yet.

CheckNot checked with the organizer yet. Look at their site before you plan around it.

12Sun
Sep ~
Tour de AcomaAcoma Pueblo, NM · road · 100, 50, 25 mi (all paved)Details
Dates
Sun, Sep 12, 2027 · projected (2026 was Sep 13)
Where
Acoma Pueblo, NM
Distances
100, 50, 25 mi (all paved)
Format
century on Acoma Pueblo lands (Sky City)
Cause
Pueblo of Acoma community programs (historical)
Organizer
Pueblo of Acoma / Sky City Casino

Date2026 edition Sun Sept 13, 2026 (2nd Sunday of September).

17Sep
17–19 ~
Marji GesickMarquette / Ishpeming, MI · mtb · 3 days · 100 mi, 50 mi (plus 200 and run variants); ~85–90%…Details
Dates
Fri, Sep 17 – Sun, Sep 19, 2027 · projected (2026 was Sep 18–20)
Where
Marquette / Ishpeming, MI
Distances
100 mi, 50 mi (plus 200 and run variants); ~85–90% singletrack, no aid stations
Format
'hardest single-day MTB race in America' (100/50 + 200)
Organizer
906 Adventure Team
Series
NUE Series (100)
Registration
2027 opening TBA; no waitlist.
Lottery
No lottery.

Date2026 edition Sep 18–20, 2026 (third weekend of September) -> Sep 17–19, 2027 projected; not announced. Registration sells out within a minute.

17Sep
17–19 ~
Mickelson Trail TrekCuster to Deadwood, SD · multi-day tour · 3 days · 109 mi over 3 days (44.5/39.5/24)Details
Dates
Fri, Sep 17 – Sun, Sep 19, 2027 · projected (2026 was Sep 18–20)
Where
Custer to Deadwood (Black Hills), SD
Distances
109 mi over 3 days (44.5/39.5/24)
Elevation
rail-trail grades
Format
3-day supported rail-trail ride (multi-day)
Organizer
South Dakota Game, Fish and Parks
Registration
2026: $225 + fee (online registration closed)

DateProjected: 3rd weekend of September (2026 edition Sept 18-20, 2026 with Thursday check-in). No 2027 date published.

NotesIncluded per brief as a note; multi-day trail ride, not a road event.

17Sep
17–18 ~
VeloSano Bike to CureCleveland, OH · charity ride · Cancer · weekend · 12, 25, 50, 100, 202 miDetails
Dates
Fri, Sep 17 – Sat, Sep 18, 2027 · projected (2026 was Sep 18)
Where
Cleveland, OH
Distances
12, 25, 50, 100, 202 mi
Format
cancer ride weekend
Cause
Cancer — Cleveland Clinic cancer research
Min. fundraising
Not published yet
Organizer
Cleveland Clinic (VeloSano)

DateProjected to the same mid-September weekend in 2027.

CheckNot checked with the organizer yet. Look at their site before you plan around it.

18Sat
Sep ~
AIDS Ride for LifeIthaca, NY · charity ride · HIV/AIDS · 14, 42, 50, 90 and 100 miles around Cayuga Lake; seven…Details
Dates
Sat, Sep 18, 2027 · projected (2026 was Sep 19)
Where
Ithaca, NY
Distances
14, 42, 50, 90 and 100 miles around Cayuga Lake; seven pit stops; shuttle for shorter options
Format
HIV/AIDS one-day ride
Cause
HIV/AIDS — Southern Tier AIDS Program (STAP)
Min. fundraising
Not published yet
Organizer
Southern Tier AIDS Program
Registration
2026 edition has run; 2027 registration not yet open (2026 registration opened April 1).

Date2026 ride was Saturday September 19, 2026 (7 AM, Stewart Park, Ithaca; registration opened April 1, 2026; no fee, $200 fundraising ask). No 2027 date published; projected to the third Saturday of September 2027 (Sept 18).

NotesLong-running (since 1999) single-day Finger Lakes AIDS ride. STAP's current event page calls it the 'Finger Lakes Ride for Life'.

18Sat
Sep ~
Beautiful Backroads CenturyCartersville, GA · road · Century plus shorter routes (per GF Guide calendar)Details
Dates
Sat, Sep 18, 2027 · projected (2026 was Sep 19)
Where
Cartersville, GA
Distances
Century plus shorter routes (per GF Guide calendar)
Format
club century
Organizer
Cartersville-Bartow County Chamber / local cycling club (per event history)

Date2026 edition was Sat Sep 19, 2026 (third Saturday of September); 2027 projected as the same weekend pattern = Sat Sep 18, 2027. Organizer has not published a 2027 date yet.

CheckNot checked with the organizer yet. Look at their site before you plan around it.

18Sat
Sep ~
Bike MS: Waves to WineSan Francisco, CA · charity ride · MS · 23, 46, 58, 72, 102 miDetails
Dates
Sat, Sep 18, 2027 · projected (2026 was Sep 19)
Where
San Francisco, CA
Route
San Francisco → Sonoma/Marin wine country
Distances
23, 46, 58, 72, 102 mi
Format
Bike MS ride (one-day)
Cause
MS — National Multiple Sclerosis Society
Min. fundraising
Not published yet
Organizer
National MS Society

DateProjected to Sat Sep 18, 2027. Confirm one-day vs two-day format.

CheckNot checked with the organizer yet. Look at their site before you plan around it.

18Sat
Sep ~
Bike to the Beach - New EnglandNewport, RI · charity ride · Autism · 30, 60, 100 mi · raise $250Details
Dates
Sat, Sep 18, 2027 · projected (2026 was Sep 19)
Where
Newport, RI
Route
Boston MA (100) / Woonsocket RI (60) / Bristol RI (30) → Newport, RI
Distances
30, 60, 100 mi
Format
autism one-day ride
Cause
Autism — Local autism/disability nonprofits in each region (e.g., Autism Society chapters, xMinds, Flutie Foundation)
Min. fundraising
$250 per rider; registration $100 (early) to $175 (final week)
Organizer
Bike to the Beach
Registration
2026 registration open; 2027 dates not yet posted

Date2026 ride Sat Sep 19, 2026 (third Saturday of September); projected to Sat Sep 18, 2027.

NotesFour regional editions in 2026; 2027 dates not posted as of Sep 2026.

18Sat
Sep ~
Capital City CenturySherman, IL · road · 20, 40, 66, 100 miDetails
Dates
Sat, Sep 18, 2027 · projected (2026 was Sep 19)
Where
Sherman (Springfield), IL
Distances
20, 40, 66, 100 mi
Elevation
flat to rolling
Format
club century
Organizer
Springfield Bicycle Club
Registration
2026: $65 (RunSignup)

DateProjected: 3rd Saturday of September (2026 edition Saturday Sept 19, 2026). Organizer references 2027 edition (volunteer comped entry) but no date.

Notes53rd+ annual; start Sherman Athletic Club.

18Sat
Sep ~
Civil War CenturyThurmont, MD · road · 102.9 mi (~7,000 ft), 75.5 mi, 64.1 mi, 51.5 mi, 25.4 miDetails
Dates
Sat, Sep 18, 2027 · projected (2026 was Sep 19)
Where
Thurmont, MD
Distances
102.9 mi (~7,000 ft), 75.5 mi, 64.1 mi, 51.5 mi, 25.4 mi
Elevation
~7,000 ft on the full century
Format
club century (Gettysburg/Antietam battlefields)
Organizer
Baltimore Bicycling Club
Registration
Online only via Active.com; opens June 1 ($75 early bird rising to $90)

Date2026 edition was Sat Sep 19, 2026 (third Saturday of September); 2027 projected as the same weekend pattern = Sat Sep 18, 2027. Organizer has not published a 2027 date yet.

NotesNo on-site registration.

18Sat
Sep ~
Closer to Free RideNew Haven, CT · charity ride · Cancer · 10, 25, 40, 65, 100 mi; remote option · raise $500–$1,000Details
Dates
Sat, Sep 18, 2027 · projected (2026 was Sep 19)
Where
New Haven, CT
Distances
10, 25, 40, 65, 100 mi; remote option
Format
cancer one-day ride
Cause
Cancer — Smilow Cancer Hospital and Yale Cancer Center
Min. fundraising
$500-$1,000 in-person riders ($250-$500 youth/students); remote riders no minimum
Organizer
Yale New Haven Health / Smilow Cancer Hospital
Registration
2026 registration open

Date2026 ride is Sat Sep 19, 2026 (third Saturday of September); projected to Sat Sep 18, 2027. Site references 2027 registration perks but no 2027 date yet.

Notes16th annual in 2026; $37M+ raised since 2011.

18Sat
Sep ~
Coeur d'FondoCoeur d'Alene, ID · road · Multiple routes including two all-the-way-around-the-lake…Details
Dates
Sat, Sep 18, 2027 · projected
Where
Coeur d'Alene, ID
Distances
Multiple routes including two all-the-way-around-the-lake options; historically ranging from short family routes up to ~110 miles
Elevation
Significant climbing on the longer lake-loop routes
Format
gran fondo
Organizer
CDA Fondo
Registration
Not announced for 2027 as of Sept 2026; historically via BikeSignup (bikesignup.com/Race/ID/CoeurDAlene/CoeurdAleneLakeGranFondo)

DateNo 2026 or 2027 date is published on the organizer's listings. The most recent confirmed edition was Sat Sept 20, 2025. The ride is held on a mid/late-September Saturday, so Sat Sept 18, 2027 is the projection.

NotesStart on Sherman Avenue at 2nd Street next to the lawn in front of the Coeur d'Alene Resort. Scenic Lake Coeur d'Alene courses.

CheckNot checked with the organizer yet. Look at their site before you plan around it.

18Sat
Sep ~
Conquer the CoastCorpus Christi, TX · road · 69 miles (full loop incl. new Harbor Bridge), 21 miles…Details
Dates
Sat, Sep 18, 2027 · projected (2026 was Sep 19)
Where
Corpus Christi, TX
Distances
69 miles (full loop incl. new Harbor Bridge), 21 miles, 10-mile family ride
Format
coastal loop over the Harbor Bridge
Cause
Local scholarships and community initiatives (Bikes to Kids, TAMUCC Islander Athletics)
Organizer
United Corpus Christi Chamber Foundation

Date2026 edition was Sat Sep 19, 2026 (third Saturday of September); 2027 projected as the same weekend pattern = Sat Sep 18, 2027. Organizer has not published a 2027 date yet.

Notes23rd annual in 2026.

18Sat
Sep ~
Cotton Patch ChallengeGreenville, TX · road · Road 6-100 miles (6, 12, 21, 35, 46, 61, 76, 100); gravel…Details
Dates
Sat, Sep 18, 2027 · projected (2026 was Sep 19)
Where
Greenville, TX
Distances
Road 6-100 miles (6, 12, 21, 35, 46, 61, 76, 100); gravel 31/42/57
Format
road rally + gravel grinder
Cause
Local charities via Rotary
Organizer
Rotary Club of Greenville

Date2026 edition was Sat Sep 19, 2026 (third Saturday of September); 2027 projected as the same weekend pattern = Sat Sep 18, 2027. Organizer has not published a 2027 date yet.

Notes30th anniversary in 2026.

18Sat
Sep ~
Dempsey ChallengeSimard-Payne Memorial Park, Lewiston → Lewiston · charity ride · Cancer · weekend · Bike up to 100 mi (century) plus shorter routes; run/walk…Details
Dates
Sat, Sep 18, 2027 · projected (2026 was Sep 19)
Where
Lewiston, ME
Route
Simard-Payne Memorial Park, Lewiston → Lewiston
Distances
Bike up to 100 mi (century) plus shorter routes; run/walk options
Format
cancer ride/run/walk weekend
Cause
Cancer — The Dempsey Center (cancer support)
Min. fundraising
Not published yet
Organizer
Dempsey Center

DateProjected to Sat Sep 18, 2027 (third weekend of September).

CheckNot checked with the organizer yet. Look at their site before you plan around it.

18Sep
18–19 ~
Fort Davis CyclefestFort Davis, TX · road · 2 days · 33, 54 or 76 miles Saturday; optional 6-mile climb to…Details
Dates
Sat, Sep 18 – Sun, Sep 19, 2027 · projected (2026 was Sep 19)
Where
Fort Davis, TX
Distances
33, 54 or 76 miles Saturday; optional 6-mile climb to Mount Locke summit Sunday
Format
two-day Davis Mountains ride (Mount Locke climb)
Organizer
Pedalpower Bicycle Association of Texas (PBBATX)

Date2026 edition was Sat Sep 19, 2026 (third Saturday of September); 2027 projected as the same weekend pattern = Sat Sep 18, 2027. Organizer has not published a 2027 date yet. 2026 dates Sept 19-20, 2026 (49th annual); 2027 projection Sept 18-19, 2027 (50th).

Notes'Ride the Texas Alps'.

18Sat
Sep ~
Jersey Devil CenturyCenterton, NJ · road · Century and shorter options (per GF Guide calendar)Details
Dates
Sat, Sep 18, 2027 · projected (2026 was Sep 19)
Where
Centerton, NJ
Distances
Century and shorter options (per GF Guide calendar)
Format
club century (Pine Barrens)
Organizer
South Jersey Wheelmen (per event history)

Date2026 edition was Sat Sep 19, 2026 (third Saturday of September); 2027 projected as the same weekend pattern = Sat Sep 18, 2027. Organizer has not published a 2027 date yet.

CheckNot checked with the organizer yet. Look at their site before you plan around it.

18Sat
Sep ✓
Life Time Chequamegon MTB FestivalHayward to Cable, WI · mtb · Chequamegon 40 (40 mi), Short & Fat (16 mi), Little… · Hayward guide →Details
Dates
Sat, Sep 18, 2027
Where
Hayward to Cable, WI
Distances
Chequamegon 40 (40 mi), Short & Fat (16 mi), Little Loggers kids loop
Format
point-to-point MTB festival (Chequamegon 40 / Short & Fat)
Cause
Charities page exists on site
Organizer
Life Time
Series
Life Time Grand Prix (round 4)
Registration
2026 registration open; 2027 registration date TBA. Life Time 6-month Club-Access members get one-week early access.
Lottery
No public lottery noted; early access for Life Time members.

DateOrganizer site lists future dates: '2027 – September 18th' (and through 2032). 2026 edition Sep 19, 2026.

The town

Once you’re in Hayward

The Hayward town guide →

18Sat
Sep ~
Maine Lighthouse RideSouth Portland, ME · road · Routes up to 100 miles past southern Maine lighthouses…Details
Dates
Sat, Sep 18, 2027 · projected (2026 was Sep 19)
Where
South Portland, ME
Distances
Routes up to 100 miles past southern Maine lighthouses (per GF Guide calendar)
Format
multi-distance coastal ride
Cause
Eastern Trail Alliance
Organizer
Eastern Trail Alliance (per event history)

Date2026 edition was Sat Sep 19, 2026 (third Saturday of September); 2027 projected as the same weekend pattern = Sat Sep 18, 2027. Organizer has not published a 2027 date yet.

CheckNot checked with the organizer yet. Look at their site before you plan around it.

18Sat
Sep ~
Mammoth TUFFMammoth Lakes, CA · gravel · 3 days · TUFF ~89 mi / 7,500 ft; shorter optionsDetails
Dates
Sat, Sep 18, 2027 · projected (2026 was Sep 18–20)
Where
Mammoth Lakes, CA
Distances
TUFF ~89 mi / 7,500 ft; shorter options
Format
high-altitude gravel race (UCI Gravel World Series round in 2026)
Organizer
TUFF Ventures
Series
UCI Gravel World Series (2026 round; 2027 TBD)
Registration
2027 registration not open.
Lottery
No lottery.

Date2026 edition Sep 18–20, 2026 (race Sat Sep 19) in Mammoth Lakes; 2027 date not published -> Sat Sep 18, 2027 projected. Its 2027 UCI status is not yet on the UCI calendar (only Highlands listed for the US).

Notes~500 riders in 2025.

18Sep
18–19 ~
Pedal the Cause (St. Louis)St. Charles, MO · charity ride · Cancer · 2 days · 7 courses: 10, 21, 30, 30 (Katy Trail), 52, 63, 100 mi…Details
Dates
Sat, Sep 18 – Sun, Sep 19, 2027 · projected (2026 was Sep 19–20)
Where
St. Charles (St. Louis area), MO
Distances
7 courses: 10, 21, 30, 30 (Katy Trail), 52, 63, 100 mi road + 1 gravel; Kids Challenge; spin; virtual
Format
cancer one-day ride weekend
Cause
Cancer — Siteman Cancer Center and Siteman Kids at St. Louis Children's Hospital (100% of funds raised)
Min. fundraising
See fundraising FAQ on site
Organizer
Pedal the Cause
Registration
2026 registration open (GiveSignup)

Date2026 event is Sat-Sun Sep 19-20, 2026 (celebration Saturday, ride Sunday) - third weekend of September; projected to the same weekend in 2027. No 2027 date published as of Sep 2026.

NotesSister event in San Diego (Padres Pedal the Cause) has been rebranded as the Curebound Cancer Challenge - listed separately.

18Sat
Sep ~
Peninsula Century Fall ChallengeSister Bay, WI · road · 25, 50, 62, 100 miDetails
Dates
Sat, Sep 18, 2027 · projected (2026 was Sep 19)
Where
Sister Bay, WI
Distances
25, 50, 62, 100 mi
Elevation
rolling
Format
Door County century
Organizer
Peninsula Pacers

DateProjected: 3rd Saturday of September (2026 edition Saturday Sept 19, 2026). Organizer has published 2027 Spring Classic date but not Fall Challenge.

NotesAll routes finish on the shore.

18Sat
Sep ~
Ride the RidgesWinona, MN · road · Community · 22.5, 44, 75.1, 102.3 mi road; 74.3 mi gravelDetails
Dates
Sat, Sep 18, 2027 · projected (2026 was Sep 19)
Where
Winona, MN
Distances
22.5, 44, 75.1, 102.3 mi road; 74.3 mi gravel
Elevation
hilly bluffs (Driftless)
Format
bluff-country century
Cause
Community — Winona Rotary
Organizer
Winona Rotary Club

DateProjected: 3rd Saturday of September (2026 edition Saturday Sept 19, 2026). No 2027 date published.

18Sat
Sep ~
Ride to Defeat ALS - MassachusettsWayland, MA · charity ride · ALS · 20, 40, 62 miDetails
Dates
Sat, Sep 18, 2027 · projected (2026 was Sep 19)
Where
Wayland, MA
Route
Longfellow Health Club, Wayland → Wayland
Distances
20, 40, 62 mi
Format
ALS one-day ride
Cause
ALS — The ALS Association (Massachusetts Chapter)
Min. fundraising
Not published yet
Organizer
The ALS Association

DateProjected to Sat Sep 18, 2027.

CheckNot checked with the organizer yet. Look at their site before you plan around it.

18Sep
18–20 ~
Skinny Tire Fall Festival (Moab Century Tour)Moab, UT · multi-day tour · Cancer · 3 days · 40, 60, 100 mi (century day)Details
Dates
Sat, Sep 18 – Mon, Sep 20, 2027 · projected (2026 was Sep 19–21)
Where
Moab, UT
Distances
40, 60, 100 mi (century day)
Format
3-day fall road festival incl. century day
Cause
Cancer — Moab Healthcare Foundation
Organizer
Skinny Tire Events

Date2026 edition Sept 19-21, 2026 (3rd weekend of September). 2027 projected Sept 18-20.

18Sat
Sep ~
Tour de VineyardsPalisade, CO · road · 23 and 58 milesDetails
Dates
Sat, Sep 18, 2027 · projected (2026 was Sep 19)
Where
Palisade, CO
Distances
23 and 58 miles
Elevation
Rolling Grand Valley terrain
Format
wine country ride
Organizer
Palisade-area organizers
Registration
2027 registration not yet open as of Sept 2026

DateNo 2027 date published. The 2026 edition was Sat Sept 19, 2026; the ride is held on a mid-September Saturday, so Sat Sept 18, 2027 is the projection.

NotesRide through the orchards and vineyards of Palisade in Colorado's Grand Valley, typically timed near the harvest season.

18Sat
Sep ~
Tour of the Unknown CoastFerndale, CA · road · 65 and 100 mi (shorter options historically)Details
Dates
Sat, Sep 18, 2027 · projected (2026 was Sep 19)
Where
Ferndale, CA
Distances
65 and 100 mi (shorter options historically)
Elevation
~9,800 ft (century, historical)
Format
'California's toughest century' (Lost Coast)

Date2026 edition Sat Sept 19, 2026 (Ferndale) (3rd Saturday of September). 2027 projected Sept 18.

CheckNot checked with the organizer yet. Look at their site before you plan around it.

19Sun
Sep ~
Bike the BarnsVerona, WI · road · ~43 or ~60 miDetails
Dates
Sun, Sep 19, 2027 · projected (2026 was Sep 20)
Where
Verona, WI
Distances
~43 or ~60 mi
Elevation
rolling
Format
farm-tour fundraiser ride
Cause
FairShare CSA Coalition
Organizer
FairShare CSA Coalition
Registration
Fundraiser rider $80 + $80 pledge

DateProjected: 3rd Sunday of September (2026 edition Sunday Sept 20, 2026). 2027 edition referenced in fundraising prizes; no date.

NotesCause-driven ride.

19Sun
Sep ~
GFNY Pittsburgh (Michelob Ultra GFNY Pittsburgh-Monroeville)Monroeville, PA · road · 41 and 70 miles (Boyce Park start)Details
Dates
Sun, Sep 19, 2027 · projected (2026 was Sep 20)
Where
Monroeville, PA
Distances
41 and 70 miles (Boyce Park start)
Format
GFNY timed gran fondo
Organizer
GFNY
Registration
2026 open; 2027 not posted

Date2026 edition was Sun Sep 20, 2026 (third Sunday of September); 2027 projected as the same weekend pattern = Sun Sep 19, 2027. Organizer has not published a 2027 date yet.

NotesInaugural edition 2025.

19Sun
Sep ~
Gran Fondo Maryland / USA Cycling Gran Fondo National ChampionshipsFrederick, MD · road · ~30, ~60, ~90 miles (GF Guide lists 30/60/70/88)Details
Dates
Sun, Sep 19, 2027 · projected (2026 was Sep 20)
Where
Frederick, MD
Distances
~30, ~60, ~90 miles (GF Guide lists 30/60/70/88)
Elevation
~8,500 ft (Gran) — highest gain/mile in the GFNS
Format
timed-segment gran fondo; GFNS national championship
Cause
Supported by Maryland Sports (Michael Erin Busch Sports Fund grant)
Organizer
Gran Fondo National Series
Registration
2026 open; 2027 not posted

Date2026 edition was Sun Sep 20, 2026 (third Sunday of September); 2027 projected as the same weekend pattern = Sun Sep 19, 2027. Organizer has not published a 2027 date yet.

Notes15th edition in 2026.

19Sep
19–25 ✓
Joy Ride CASan Francisco → Los Angeles · charity ride · HIV/AIDS · 7 days · San Francisco to Los Angeles over 7 daysDetails
Dates
Sun, Sep 19 – Sat, Sep 25, 2027
Where
San Francisco, CA
Route
San Francisco → Los Angeles
Distances
San Francisco to Los Angeles over 7 days
Format
HIV/AIDS multi-day (7-day SF to LA)
Cause
HIV/AIDS — Site says 100% of proceeds go to 'benefiting non-profit organizations'.
Min. fundraising
Not published yet
Organizer
FAB Adventures Inc. (Florida-based; spun off 'Joy Ride FL'); founder Tom Manning
Registration
Site shows 'Registration open'.

Datethejoyrideca.org (checked Oct 1, 2026) now reads '7 day cycling event from San Francisco to Los Angeles September 19th-25th, 2027' and shows registration open. This replaces the earlier 'Coming June 2027' / 6-day copy.

NotesCAUTION: San Francisco AIDS Foundation and the Los Angeles LGBT Center publicly disavowed this event (June 4-5, 2026), stating it is not affiliated with AIDS/LifeCycle, that they are unaware of any meaningful connection to California HIV/AIDS or LGBTQ organizations, and that emails to former ALC participants were sent without authorization.

19Sun
Sep ~
North Shore CenturyWilmette, IL · road · Children · 25, 50, 62, 100 miDetails
Dates
Sun, Sep 19, 2027 · projected (2026 was Sep 20)
Where
Wilmette, IL
Distances
25, 50, 62, 100 mi
Elevation
flat
Format
club century
Cause
Children — multiple local charities
Organizer
Evanston Bicycle Club
Registration
2026 registration opened July 1, 2026 ($50 online, $65 day-of, $15 under 17); capped at 2,400 riders

DateProjected: 3rd Sunday of September (2026 edition Sunday Sept 20, 2026; 2025 was Sept 21). No 2027 date published.

Notes41st annual in 2026; start at Gillson Park, Wilmette.

24Sep
24–26 ~
Autumn Escape Bike Trek (Cape Cod)Sandwich, MA · charity ride · Lung · 3 days · 1-, 2- or 3-day options on Cape Cod (distances not listed)Details
Dates
Fri, Sep 24 – Sun, Sep 26, 2027 · projected (2026 was Sep 25–27)
Where
Sandwich, MA
Distances
1-, 2- or 3-day options on Cape Cod (distances not listed)
Format
lung one-to-three-day ride
Cause
Lung — American Lung Association
Min. fundraising
Not published yet
Organizer
American Lung Association

DateProjected to Sep 24-26, 2027.

CheckNot checked with the organizer yet. Look at their site before you plan around it.

24Sep
24–26 ~
Cycle for the CauseNew York, NY · charity ride · HIV/AIDS · 3 days · 200+ miles over 3 days through NY, NJ and CT (Day 1 over… · raise $2,000–$3,000 · New York guide →Details
Dates
Fri, Sep 24 – Sun, Sep 26, 2027 · projected (2026 was Sep 25–27)
Where
New York, NY
Route
New York, NY (Randall's Island) - 2026 format; through 2025 the ride started in Boston, MA → New York, NY (The LGBT Community Center, 208 W 13th St)
Distances
200+ miles over 3 days through NY, NJ and CT (Day 1 over the George Washington Bridge into NJ then CT; Day 2 Connecticut loop with 100-mile century option; Day 3 back through NYC boroughs). 2025 was a 4-day (3 riding days) 275-mile Boston-to-NYC route.
Format
HIV/AIDS / LGBTQ multi-day (3-day, hotel-based)
Cause
HIV/AIDS — The Lesbian, Gay, Bisexual & Transgender Community Center (NYC) - HIV/AIDS prevention and care, mental health, substance-use recovery, youth programs
Min. fundraising
$3,000 riders age 25+; $2,000 riders 18-24; $1,000 crew; $95 registration fee (riders and crew); virtual: no fee/no minimum
Organizer
The NYC LGBT Community Center
Registration
2026 registration open (support.gaycenter.org DonorDrive); not a lottery; two hotel nights and meals included

Date2026 ride is Friday-Sunday September 25-27, 2026. Projected to the corresponding late-September weekend in 2027 (Sept 24-26). Caution: the ride has floated between the 3rd and 4th September weekends (2022: Sept 16-18; 2025: Sept 18-21; 2026: Sept 25-27), so Sept 17-19, 2027 is also plausible. No 2027 date published. Organizer site (Oct 1, 2026) shows only the Sept 25-27, 2026 ride; no 2027 date or registration yet.

NotesFormerly the Northeast AIDS Ride, Boston-to-NYC. Reformatted for 2026 into a 3-day tri-state loop starting and ending in NYC. Has a virtual tier.

The town

Once you’re in New York

The New York town guide →

24Sep
24–25 ~
Salt to Saint RelaySalt Lake City to St. George, UT · road · 2 days · 420 mi relay (2-8 rider teams); solo optionDetails
Dates
Fri, Sep 24 – Sat, Sep 25, 2027 · projected (2026 was Sep 25–26)
Where
Salt Lake City to St. George, UT
Distances
420 mi relay (2-8 rider teams); solo option
Format
420-mile Salt Lake City to St. George relay (24 legs) with solo/ultra category
Organizer
Salt to Saint

Date2026 edition Fri-Sat Sept 25-26, 2026.

25Sat
Sep ~
Big Dam Bridge 100Little Rock, AR · road · 15, 26, 50, 75 and 105 milesDetails
Dates
Sat, Sep 25, 2027 · projected (2026 was Sep 26)
Where
Little Rock, AR
Distances
15, 26, 50, 75 and 105 miles
Format
Arkansas's largest cycling tour (Big Dam Bridge)
Organizer
Big Dam Bridge 100 (Little Rock)

Date2026 edition was Sat Sep 26, 2026 (last Saturday of September); 2027 projected as the same weekend pattern = Sat Sep 25, 2027. Organizer has not published a 2027 date yet.

NotesSanctioned tour with a competitive 100-mile category.

25Sep 25–
Oct 2 ~
California Coast ClassicSan Francisco → Los Angeles · charity ride · Arthritis · 8 days · 525 mi over 8 days, San Francisco to Los Angeles on Hwy 1 · raise $3,500Details
Dates
Sat, Sep 25 – Sat, Oct 2, 2027 · projected (2026 was Sep 26)
Where
San Francisco to Los Angeles, CA
Route
San Francisco → Los Angeles
Distances
525 mi over 8 days, San Francisco to Los Angeles on Hwy 1
Format
arthritis eight-day tour
Cause
Arthritis — Arthritis Foundation
Min. fundraising
$3,500
Organizer
Arthritis Foundation Cycling Experience
Registration
Capped at ~250 riders; fully supported

Date2026 edition is Sept 26–Oct 3, 2026 (8 days, SF→LA); projected to the equivalent late-Sept week in 2027. 2027 dates not yet published.

CheckNot checked with the organizer yet. Look at their site before you plan around it.

25Sat
Sep ~
Denver Century RideDenver, CO · road · 100, 85, 50 and 25 miles, plus an 11.7-mile Ice Cream RideDetails
Dates
Sat, Sep 25, 2027 · projected (2026 was Sep 26)
Where
Denver, CO
Distances
100, 85, 50 and 25 miles, plus an 11.7-mile Ice Cream Ride
Elevation
Modest - urban and near-urban Front Range terrain
Format
urban century
Cause
Bicycle Colorado (principal ride beneficiary)
Organizer
Denver Century Ride (title sponsor CommonSpirit)
Registration
2027 registration not yet open as of Sept 2026; 2026 registration via https://register.hakuapp.com/?event=2694c1a03d2c9c9e9418

DateNo 2027 date published. The 16th annual edition was Sat Sept 26, 2026; the ride is held on a late-September Saturday, so Sat Sept 25, 2027 is the projection.

NotesBilled as 'Colorado's Only Urban-Based Ride for All Cycling Abilities.' Start/finish at The Shops at Northfield, Denver. Routes explore Denver neighborhoods, parks and bike infrastructure.

25Sat
Sep ~
Escape New YorkNew York, NY · road · 25, 50, 63, 75, 100 and 125 miles · New York guide →Details
Dates
Sat, Sep 25, 2027 · projected (2026 was Sep 26)
Where
New York (Sakura Park, Manhattan), NY
Distances
25, 50, 63, 75, 100 and 125 miles
Format
club century / multi-distance ride
Cause
NYCC youth cycling programs across the five boroughs
Organizer
New York Cycle Club (volunteer-run)
Registration
2026: $260 (early bird $105 through May 31)

Date2026 edition was Sat Sep 26, 2026 (last Saturday of September); 2027 projected as the same weekend pattern = Sat Sep 25, 2027. Organizer has not published a 2027 date yet.

NotesNYCC's signature one-day event into Rockland/Bergen counties.

The town

Once you’re in New York

The New York town guide →

25Sat
Sep ~
Heck of the NorthTwo Harbors, MN · gravel · 100 mi / 3,400 ft, 50 mi, 20 miDetails
Dates
Sat, Sep 25, 2027 · projected (2026 was Sep 26)
Where
Two Harbors, MN
Distances
100 mi / 3,400 ft, 50 mi, 20 mi
Format
North Shore gravel classic
Organizer
HOTN Events
Registration
BikeReg; ~400 riders; $90–110.
Lottery
No lottery.

Date2026 edition Sep 26, 2026 (last Saturday of September) -> Sep 25, 2027 projected; not announced.

NotesFounded 2007.

25Sep
25–26 ~
Kato Bike Fall Fest (successor to Mankato River Ramble)Mankato, MN · road · festival · 2 days · Sunday: 12.4 and 37.2 mi paved; 11.4 and 38.7 mi gravelDetails
Dates
Sat, Sep 25 – Sun, Sep 26, 2027 · projected (2026 was Sep 26–27)
Where
Mankato, MN
Distances
Sunday: 12.4 and 37.2 mi paved; 11.4 and 38.7 mi gravel
Elevation
rolling
Format
fall festival weekend with Sunday tour
Organizer
Greater Mankato Bike & Walk Advocates and BikeMN
Registration
Eventbrite

DateProjected: last weekend of September (2026 edition Sept 26-27, 2026 with Sunday tour Sept 27). No 2027 date published.

NotesReplaced the Mankato River Ramble starting 2025.

25Sat
Sep ~
Knoxville Fall Classic Double CenturyFairfield / Vacaville, CA · road · 200 miDetails
Dates
Sat, Sep 25, 2027 · projected (2026 was Sep 26)
Where
Fairfield / Vacaville, CA
Distances
200 mi
Format
Cal Triple Crown double (Quackcyclists)
Organizer
Quackcyclists

Date2026 edition Sat Sept 26, 2026 (last Saturday of September). 2027 projected Sept 25.

25Sat
Sep ~
Life Time The Rad Dirt FestTrinidad, CO · gravel · Stubborn Dolores 110 mi, Anteloop 70 mi, Habanero 40 miDetails
Dates
Sat, Sep 25, 2027 · projected (2026 was Sep 26)
Where
Trinidad, CO
Distances
Stubborn Dolores 110 mi, Anteloop 70 mi, Habanero 40 mi
Format
gravel race
Organizer
Life Time
Series
Life Time Grand Prix (round 5, returns to series in 2027); UNBOUND qualifier
Registration
2027 registration date TBA; Life Time members get one-week early access.
Lottery
No lottery; UNBOUND qualifier coins.

DateOrganizer site shows only Sep 26, 2026; 2027 date not published. Last-Saturday-of-September pattern (Sep 27 2025, Sep 26 2026) gives Sep 25, 2027. Confirmed to be a 2027 Life Time Grand Prix round.

NotesFounded 2021. 2026 entry ~$190.

25Sat
Sep ~
Lighthouse Century (SLOBC)Morro Bay, CA · road · 40, 65, 75, 100 miDetails
Dates
Sat, Sep 25, 2027 · projected (2026 was Sep 26)
Where
Morro Bay, CA
Distances
40, 65, 75, 100 mi
Elevation
1,400 ft (40) / 2,000 (65) / 2,300 (75) / 4,700 ft (100)
Format
coastal century Morro Bay-San Simeon
Cause
Bike SLO County and local groups
Organizer
San Luis Obispo Bicycle Club
Registration
2026 registration opened June 7, 2026; 1,000-rider cap

Date2026 edition confirmed Sat Sept 26, 2026 (last Saturday of September). 2027 projected to Sept 25.

25Sat
Sep ~
Mountains to the Desert ClassicTelluride, CO · road · Children · 73 to 110 milesDetails
Dates
Sat, Sep 25, 2027 · projected (2026 was Sep 26)
Where
Telluride, CO
Distances
73 to 110 miles
Elevation
Substantial - descends from the San Juan Mountains toward the desert with major climbing en route
Format
charity century
Cause
Children — Telluride-area youth foundation
Organizer
Telluride-area organizers
Registration
2027 registration not yet open as of Sept 2026

DateNo 2027 date published. The 2026 edition was Sat Sept 26, 2026; the ride is held on a late-September Saturday, so Sat Sept 25, 2027 is the projection.

NotesPoint-to-point ride from the mountains around Telluride out toward the desert country.

25Sat
Sep ~
Pedal the PetrifiedPetrified Forest National Park, AZ · road · 31 and 63 miDetails
Dates
Sat, Sep 25, 2027 · projected (2026 was Sep 26)
Where
Petrified Forest National Park (Holbrook), AZ
Distances
31 and 63 mi
Format
metric century inside Petrified Forest National Park

Date2026 edition Sat Sept 26, 2026 (last Saturday of September). 2027 projected to Sept 25.

CheckNot checked with the organizer yet. Look at their site before you plan around it.

25Sat
Sep ~
Ride the RogueGrants Pass / Rogue River, OR · road · Bike advocacy · Multiple routes, historically from a short family ride up…Details
Dates
Sat, Sep 25, 2027 · projected (2026 was Sep 26)
Where
Grants Pass / Rogue River, OR
Distances
Multiple routes, historically from a short family ride up to a metric or full century along the Rogue River
Elevation
Rolling to hilly Rogue Valley terrain
Format
community ride
Cause
Bike advocacy — Rogue River Greenway Foundation
Organizer
Rogue River Greenway Foundation
Registration
2027 registration not yet open as of Sept 2026

DateNo 2027 date published. The 2026 edition was Sat Sept 26, 2026 per the Portland Bicycling Club event calendar; the ride is held on a late-September Saturday, so Sat Sept 25, 2027 is the projection.

NotesSouthern Oregon ride supporting the Rogue River Greenway trail.

25Sat
Sep ~
Seacoast CenturyHampton, NH · road · 25, 50, 62, 100 milesDetails
Dates
Sat, Sep 25, 2027 · projected (2026 was Sep 26)
Where
Hampton, NH
Distances
25, 50, 62, 100 miles
Format
club century (NH/MA/ME coast)
Cause
Granite State Wheelers fund-raiser (club programs)
Organizer
Granite State Wheelers (with Bike-Walk Alliance of NH)
Registration
BikeReg (bikereg.com/seacoast-century-52)

Date2026 edition was Sat Sep 26, 2026 (last Saturday of September); 2027 projected as the same weekend pattern = Sat Sep 25, 2027. Organizer has not published a 2027 date yet.

Notes52nd annual in 2026; tri-state ride touching NH, MA and ME.

25Sat
Sep ~
Wheelin' to WallWall, SD · road · 31 and 38 mi road; 35 and 64 mi gravelDetails
Dates
Sat, Sep 25, 2027 · projected (2026 was Sep 26)
Where
Wall, SD
Distances
31 and 38 mi road; 35 and 64 mi gravel
Elevation
rolling prairie/Badlands
Format
Badlands road/gravel ride
Organizer
Wheelin' to Wall
Registration
BikeReg

DateProjected: last Saturday of September (2026 edition Saturday Sept 26, 2026). No 2027 date published.

26Sun
Sep ~
Apple Cider CenturyThree Oaks, MI · road · Children · 15, 25, 37, 50, 62, 75, 100 miDetails
Dates
Sun, Sep 26, 2027 · projected (2026 was Sep 27)
Where
Three Oaks, MI
Distances
15, 25, 37, 50, 62, 75, 100 mi
Elevation
rolling
Format
large club century
Cause
Children
Organizer
Three Oaks Spokes Bicycle Club
Registration
2026: $75 through Sept 21; kids 12 and under free

DateProjected: always the last Sunday of September (2026 edition Sunday Sept 27, 2026). No 2027 date published.

NotesSince 1974; ~4,000+ riders.

26Sun
Sep ~
Honolulu Century RideHonolulu, HI · road · Bike advocacy · 25, 50, 75, 100 miDetails
Dates
Sun, Sep 26, 2027 · projected (2026 was Sep 27)
Where
Honolulu, HI
Distances
25, 50, 75, 100 mi
Format
Hawaii Bicycling League's signature ride (Kapiolani Park)
Cause
Bike advocacy — Hawaii Bicycling League
Organizer
Hawaii Bicycling League

Date2026 edition Sun Sept 27, 2026 (last Sunday of September).

26Sun
Sep ~
Six Gap Century & Three Gap FiftyDahlonega, GA · road · Six Gap 104 mi (11,200+ ft); Three Gap Fifty 58 mi; (GF…Details
Dates
Sun, Sep 26, 2027 · projected (2026 was Sep 27)
Where
Dahlonega, GA
Distances
Six Gap 104 mi (11,200+ ft); Three Gap Fifty 58 mi; (GF Guide also lists a 35-mile option)
Elevation
11,200+ ft (Six Gap)
Format
North Georgia mountain century (six gaps)
Organizer
Six Gap (Dahlonega)
Registration
2026: $131; discounted registration ends Sept 7 or at the 1,500-rider limit

Date2026 edition was Sun Sep 27, 2026 (last Sunday of September); 2027 projected as the same weekend pattern = Sun Sep 26, 2027. Organizer has not published a 2027 date yet.

NotesStarts at Lumpkin County High School; ride limit 1,500.

26Sun
Sep ~
Tour de Cure: Silicon Valley (Palo Alto, CA)Palo Alto, CA · charity ride · Diabetes · 7, 35, 65 miDetails
Dates
Sun, Sep 26, 2027 · projected (2026 was Sep 27)
Where
Palo Alto, CA
Distances
7, 35, 65 mi
Format
diabetes one-day ride
Cause
Diabetes — American Diabetes Association
Min. fundraising
Not published yet
Organizer
American Diabetes Association

DateProjected to Sun Sep 26, 2027.

CheckNot checked with the organizer yet. Look at their site before you plan around it.

26Sun
Sep ~
Tour of the Rio Grande Bicycle CenturyAlbuquerque, NM · road · 39, 62, 78, 100 miDetails
Dates
Sun, Sep 26, 2027 · projected (2026 was Sep 27)
Where
Albuquerque, NM
Distances
39, 62, 78, 100 mi
Format
Albuquerque valley century

Date2026 edition Sun Sept 27, 2026 (last Sunday of September). 2027 projected Sept 26.

26Sun
Sep ~
Twin Lights Ride (Bike New York)Highlands, NJ · road · 15, 30, 55, 75, 100 miles from Huddy ParkDetails
Dates
Sun, Sep 26, 2027 · projected (2026 was Sep 27)
Where
Highlands, NJ
Distances
15, 30, 55, 75, 100 miles from Huddy Park
Format
multi-distance supported ride
Cause
Bike New York education programs
Organizer
Bike New York
Registration
2026 registration open

Date2026 edition was Sun Sep 27, 2026 (last Sunday of September); 2027 projected as the same weekend pattern = Sun Sep 26, 2027. Organizer has not published a 2027 date yet.

NotesBike New York's fall century on the Jersey Shore/Navesink highlands.

26Sun
Sep ~
Vermont 50 MTBWest Windsor, VT · mtb · 50 mi MTBDetails
Dates
Sun, Sep 26, 2027 · projected (2026 was Sep 27)
Where
West Windsor (Ascutney), VT
Distances
50 mi MTB
Format
50-mile MTB (and 50K/50-mile run) fundraiser
Cause
Vermont Adaptive
Organizer
Vermont 50
Lottery
No lottery (historically a lottery-free sellout).

Date2026 edition Sep 27, 2026 (last Sunday of September) -> Sep 26, 2027 projected; not announced.

← The 2027 calendarAll 640, with filters

I do the miles. You decide who they’re for.

In 2027 I ride 10,000 miles, all on the bike, every one of them for queer communities. You pledge a few cents a mile and pick which org it goes to. It starts January 1.