Endurance Sport Events in United States 🇺🇸 2026–2027 — Calendar
161 Upcoming endurance events listed in United States from September 2026 to March 2028 with the most events in California (21), Texas (15) and Georgia (11), including Bank of America Chicago Marathon and TCS New York City Marathon.
331 Athletes targeting these events on Intervals.icu
Sep 29, 2026
Bike Night at COTA: September 29
**Event Schedule:**
- 5:15PM - On-Site Registration Opens
- 6:00PM - Track Opens*
- Sunset - Track Closes
*Timing…
Oct 3, 2026
Angeles Crest 100
The Angeles Crest 100 Mile Endurance Run has been held since 1986. It is one of the original five 100-mile races and is…
Oct 3, 2026
Buffalo River Gravel Gran Fondo
Buffalo River Gran Fondo – October 3, 2026**Start/Finish:** Second Stage, Amherst, VAThe Buffalo River Gran Fondo return…
Oct 3, 2026
Charm City Cross - USCX Series UCI C1/C2
**PRESENTED BY WAGNER ROOFING**…
Oct 3, 2026
Culpeper Cycling Century
***** PLEASE NOTE THE NEW START/FINISH LOCATION!*****Lenn Park | 19206 Edwin Way | Culpeper, VA 22701
Register ear…
Oct 3, 2026
The Pretzel Run
Oct 3, 2026
Twin Cities 5k
Oct 4, 2026
Cameron Crusher
Oct 4, 2026
Delco 10 Miler
Oct 4, 2026
Great Pumpkin Metric 55K
The Great Pumpkin Metric is a scenic, rural bicycle tour through southwestern Indiana. Cyclists will ride through portio…
Oct 4, 2026
Ironman 70.3
Oct 4, 2026
Lane Purser Memorial Road Race Series [1st 10 Miler]
2026 Lane Purser Memorial Road Race Series
Presented by the Memphis Runners Track Club
Join us for the 44th annual Road…
Oct 4, 2026
Pacific Beach Half Marathon
Oct 4, 2026
Portland Half Marathon
Oct 4, 2026
Twin Cities Marathon
Whether you wake up at 4 a.m. to lace up or spend the night before hand-lettering motivational signs, the Medtronic Twin…
Oct 4, 2026
Waco 70.3
Oct 10, 2026
5k on the 5th Runway
A rare opportunity to run on a runway at the world's busiest airport
Oct 10, 2026
Big Apple Triathalon
Big apple
Oct 10, 2026
Boston 10K for Women
Oct 10, 2026
Kodiak 100km (3120 M+)
https://kodiak.utmb.world/races/100K
Oct 10, 2026
OCTOBER CYCLEFEST - Octoginta 57 & Tour de Chicken Creek
**October CycleFest!**
***Featuring: Tour de Chicken Creek (gravel) - Sat, Oct 10. and Octoginta 57 (road) - Sun, Oct.1…
Oct 10, 2026
Tour de Greene 2026 (20th Annual)
We are a casual social ride with great support. Registration is only $60 **(price increases to $70 at Midnight (EST)**…
Oct 11, 2026
AthHalf Half Marathon
Oct 11, 2026
Bank of America Chicago Marathon
The Bank of America Chicago Marathon is known for its flat and fast course. The race starts and finishes in Grant Park a…
Oct 11, 2026
Chicago Marathon
Oct 11, 2026
Falkorburg Cross -- Event #3 of the 2026 BikeReg Cyclocross Super Series
**Event Name: *****Falkorburg Cross, Event #3 in the 2026 BikeReg Cyclocross Super Series******Hosted by Baltimore Bi…
Oct 11, 2026
Great River Ride Century / Berkshire Brevets 2026
** Great River Ride 2026**
**A Fundraiser for the Friends of the Columbia Greenway Rail Trail Inc.**
**Post R…
Oct 11, 2026
Lime Rock Park Epic
***New England's Fall Classic, the Lime Rock Park Epic***
Based at the legendary Lime Rock Park in Connecticut's Litchf…
Oct 11, 2026
Long Beach Marathon
Challenge yourself to 26.2 miles on a fast, flat, sea-level course showcasing the best of Long Beach.
Starting in Downt…
Oct 11, 2026
Maratona Chicago
3:10:00
Oct 11, 2026
unPAved of the Susquehanna River Valley
Before registering **read all the rules, schedule, route descriptions, and details about each category** on the unPAved…
Oct 16, 2026
Head of the Charles 2026
Oct 16, 2026
Tree House CX
**TREE HOUSE CX**
**Clinic and Pre-Ride | Friday, October 16th**
** River Valley CX Series | Saturday, October 17th**…
Oct 17, 2026
2026 Coyote Classic Cross-Country Series Round #2 of 3
- The Endurance race starts at 8:00 am.
- The conventional mountain bike race starts at 10:00 am.
- If we have a larg…
Oct 17, 2026
2026 Glassner Autumn Challenge
To volunteer for this year's Glassner Autumn Challenge, go to the Glassner Volunteer page.
We look forward to seeing yo…
Oct 17, 2026
2026 Gran Fondo Hincapie-Greenville
Not sure which distance is right for you? Visit our website to read the course descriptions and check out the maps to he…
Oct 17, 2026
5k and 10k Fun Run x OMNI Brewing - Victoria | 2026 MN Brewery Run
Oct 17, 2026
Chino Gravel Grinder
Celebrated as Arizona’s oldest and most iconic gravel grinder, the Chino Grinder has earned its reputation as the toughe…
Oct 17, 2026
Dirty Sheets Gravel
62 Mile
Oct 17, 2026
IRONMAN 70.3 North Carolina
Oct 17, 2026
Jesse Owens 5K
Experience what the Columbus Marathon & 1/2 Marathon weekend is all about when you take part in the Jesse Owens 5K, hono…
Oct 17, 2026
Kansas City Marathon
5k
10k
Half-Marathon
Marathon
Oct 17, 2026
Lifetime Big Sugar Classic Gravel 100
Oct 17, 2026
Palo Duro Canyon 50k
Oct 17, 2026
Rev3 Mighty Matapeake
Oct 17, 2026
Sonoma Fall Classic
Oct 17, 2026
Uwharrie 100k
Oct 17, 2026
Wilmington 70.3
Oct 17, 2026
Wilmington 70.3
Oct 18, 2026
CRW Cranberry Harvest Century
CRW Cranberry Century - Oct 18, 2026
The Cranberry Century is a fall classic in Plymouth MA with beautiful routes passi…
Oct 18, 2026
Grand Rapids Marathon
Oct 18, 2026
Happy Valley Half Marathon & 5K
Oct 18, 2026
Ironman Ca
Oct 18, 2026
Ironman California
Full distance triathlon
Oct 18, 2026
Lane Purser Memorial Road Race Series [2nd 10 Miler]
2026 Lane Purser Memorial Road Race Series
Presented by the Memphis Runners Track Club
Join us for the 44th annual Road…
Oct 18, 2026
VACX Series: Richmond Festival of Cross - Byrd Park
One day licenses can be purchased for $15 for Juniors, Cat 5 Men and Cat 4/5 Women. All other racers must have a valid…
Oct 18, 2026
Winter Series 2026 Willow Springs ITT
https://www.strava.com/segments/6423382
Oct 23, 2026
Central Texas Showdown 2026
The last day to unregister for a full refund will be Sept. 23rd. After the refund period a credit can be given towards…
Oct 24, 2026
Cap Trail Classic 10-Mile
Oct 24, 2026
Eagan Parkrun 5k
Oct 24, 2026
NAPA Fall
Oct 24, 2026
Nogales Road Race - AZ Championship
Welcome to the Nogales Bicycle Classic
Experience the beauty, culture, and challenge of Southern Arizona’s premier cycl…
Oct 24, 2026
NQCX (VA Cyclocross State Championship) - VACX
**Race and Course Info:**
Back for 2026 is NQCX or New Quarter Cyclocross located at New Quarter Park in York County, V…
Oct 24, 2026
The Edisto Island Triathlon Pro Am
Oct 24, 2026
Twin Rivers Challenge 2026
ONLINE REGISTRATION IS CLOSED AS OF 5 P.M. OCTOBER 21, 2026 – WALK-UP REGISTRATION OPENS SATURDAY, OCTOBER 24 AT 7:30 A.…
Oct 25, 2026
51st Marine Corp Marathon
Oct 25, 2026
Atlanta 10 Miler
Oct 25, 2026
BikenetiCX -- Event #4 of the 2026 BikeReg Cyclocross Super Series
***Sunday, October 25, 2026******Loudoun County Fairgrounds, Leesburg, VA***
Race #4 in the **BikeReg CycloCross Su…
Oct 25, 2026
Winter Series 2026 Hill Climb
https://www.strava.com/routes/3383262635588364590
Oct 31, 2026
Minneapolis Halloween Half
Nov 1, 2026
cambridge half marathon
Nov 1, 2026
Kansas Half Marathon
Nov 1, 2026
Lane Purser Memorial Road Race Series [1st Half Marathon]
2026 Lane Purser Memorial Road Race Series
Presented by the Memphis Runners Track Club
Join us for the 44th annual Road…
Nov 1, 2026
TCS New York City Marathon
Nov 1, 2026
Winter Series 2026 Road Race #1
https://www.strava.com/routes/3383254847999264664
Nov 7, 2026
CFA Corinth Half Marathon
Nov 7, 2026
Cranksgiving 2026 - Lititz
Ride your bike. ***Win a bike!***
Make a difference.
That's what Lititz Bikeworks' Cranksgiving is all about. It costs…
Nov 7, 2026
Gooseberry Epic
The Gooseberry Epic is Southern Utah’s ultimate endurance race—part test of grit, part slickrock playground, and all unf…
Nov 7, 2026
IronMAN Florida 2026
Nov 7, 2026
Iron Man - Panama City, FL
Nov 7, 2026
Mt. Tam 50K
Mt. Tamalpais is the dominating feature in Marin County. Any true trail runner who sees it wants to run up it. Here’s…
Nov 7, 2026
Pan-American Cyclocross Championships and DCCX
Join us November 7-8 for DCCX and the Pan-American Cyclocross Championships.
**The Event**: We are happy to be back in…
Nov 7, 2026
Spirit World Gravel Grinder
https://ridewithgps.com/routes/44502961
Nov 8, 2026
Boston Half
The Boston Half begins and ends in Boston’s Franklin Park, one of the oldest parks in America. The rolling course runs a…
Nov 8, 2026
Santa Barbara Half Marathon
Nov 14, 2026
2026 Coyote Classic Cross-Country Series Round #3 of 3
- The Endurance race starts at 8:00 am.
- The conventional mountain bike race starts at 10:00 am.
- If we have a larg…
Nov 14, 2026
Allianz Richmond Marathon
Nov 14, 2026
Borderlands Gravel Race
The Arizona Gravel Championship will be contested as a single-day event in the borderlands of southeastern Arizona, host…
Nov 14, 2026
Charlotte Marathon
Nov 14, 2026
Lady of the Lake
Nov 14, 2026
Lane Purser Memorial Road Race Series [2nd Half Marathon] [Big River Crossing Half Marathon]
2026 Lane Purser Memorial Road Race Series
Presented by the Memphis Runners Track Club
Join us for the 44th annual Road…
Nov 14, 2026
Ripon Turkey Trail Run (10k)
Nov 14, 2026
Savannah Southern Half Marathon
Nov 15, 2026
Eagan Parkrun 5k
Nov 15, 2026
Madison Marathon
Nov 15, 2026
Madison Marathon - Half
Nov 21, 2026
El Tour de Tucson
102 miles
Nov 21, 2026
Philadelphia Half Marathon 2026
Nov 21, 2026
Secret Squirrel CX
Ask anyone who came last year what it is.....
This is an unsanctioned race - NO LICENSE REQUIRED!
Please don't make…
Nov 22, 2026
Philadelphia Marathon
Nov 26, 2026
Boulevard Bolt
5 Miler
Nov 26, 2026
Lenny and Joe's Madison Turkey Trot
Madison, CT Turkey Trot
Nov 26, 2026
Thanksgiving Day Half Marathon
Nov 27, 2026
Highland Park Turkey Trot 5k
Nov 28, 2026
Full Belly 5K
Nov 29, 2026
Seattle Marathon
Dec 4, 2026
West Texas Showdown 2026
*Please visit the **West Texas Showdown website** for more information about this event and routes. *
**West Texas Sho…
Dec 5, 2026
Eastside Beltline 12k
Dec 5, 2026
Rehoboth Seashore Marathon
Dec 5, 2026
St. Jude Memphis Marathon
When does registration open?
St. Jude Heroes registration is open to the public April 1 – June 2, 2026.
Participant must…
Dec 6, 2026
70.3 La Quinta
Ironman 70.3 La Quinta
Dec 6, 2026
California International Marathon (CIM)
The Fastest Course in the West!
#1 Boston Qualifier ○ Top-10 Largest US Marathon ○ Gentle Rolling Hills with a Flat, Fas…
Dec 6, 2026
Ironman 70.3
Dec 6, 2026
Ironman 70.3
Dec 6, 2026
Nittany Valley Half-Marathon
**Join us for the** **42nd Nittany Valley Half Marathon**!This 13.1-mile course begins and ends on Penn State’s campus,…
Dec 6, 2026
Queens Marathon
Dec 13, 2026
2026 JAL Honolulu Marathon
Dec 13, 2026
BCS Marathon
Mostly flat course; likely cold & windy.
Dec 13, 2026
Ironman 70.3 Florida
Dec 19, 2026
Reindeer Run 5K & 10K
Jan 1, 2027
Kailua Moonlight Run 5K
Moonlight Run 5K
Jan 2, 2027
Polar Opposite Peachtree
Jan 17, 2027
Houston Marathon
Jan 17, 2027
Louisiana Marathon
Jan 30, 2027
Charleston Half Marathon
Jan 30, 2027
Miami Marathon
Feb 13, 2027
Black Canyon Ultras 100K
Feb 14, 2027
Austin International Marathon
Feb 14, 2027
Haltom Stampede
Feb 14, 2027
Mesa Marathon
Mar 7, 2027
Olympic Triathlon - Clermont
Mar 14, 2027
Ironman 70.3
Mar 14, 2027
IRONMAN 70.3 Dallas-Little Elm
Mar 21, 2027
Shamrock Shuffle
Apr 18, 2027
Delaware Marathon
Apr 19, 2027
Boston Marathon
Apr 24, 2027
Desert Gravel 75 Mile Course
Apr 24, 2027
Ironman Texas
Apr 24, 2027
Ironman Texas
140.6 Miles
Apr 25, 2027
2027 Tour of Georgia Gran Fondo, a SENA Gran Fondo National Series event
**DETAILS HERE SUBJECT TO CHANGE**
For most up to date details, visit: https://www.granfondonationalseries.com/gran-fon…
Apr 25, 2027
Eugene Marathon
Apr 25, 2027
OKC Memorial Half Marathon
May 2, 2027
Flying Pig Marathon
The Cincinnati Flying Pig Marathon is a beautiful course, that “flies” along the streets of Cincinnati, Covington, Newpo…
May 2, 2027
Maine Coast Marathon, Half Marathon, & 5K
The Maine Coast Marathon Race Weekend is more than a finish line. It's an opportunity to experience the best of coastal…
May 8, 2027
Gonzo Gravel
Gonzo Gravel Race
May 14, 2027
ACRA
May 15, 2027
Utmb Rothrock
May 16, 2027
cHATTANOOGA 70.3
May 23, 2027
Samson's 10k
Jun 5, 2027
2026 Ojai Valley Century, to support the Scouts of Troops of Ventura County
Presented by Ojai Valley Rides, Inc.
- [www.ojaivalleycentury.org/](http://www.ojaivalleycentury.org/)
- [www.BikeReg.…
Jun 5, 2027
Tour de Frederick
Presented by The Rotary Club of Carroll Creek
- [www.tourdefrederick.com](http://www.tourdefrederick.com)
- [www.BikeR…
Jun 6, 2027
IRONMAN 70.3 Omaha
Jun 6, 2027
San Jose Half Marathon
San Jose Half Marathon
Get ready to run 13.1 miles on a blazing fast USATF Certified course with an electric environment…
Jun 13, 2027
Ironman 70.3 Eagleman
Jun 27, 2027
Tri
Jul 25, 2027
Ironman Lake Placid
Aug 14, 2027
DQ Brookville Olympic
Aug 22, 2027
Chicago Triathlon
Sep 18, 2027
IM Maryland 2027
Oct 8, 2027
Kodiak Ultra Marathons by UTMB 100M
Dec 12, 2027