United States
- Alabama 10
- Alaska 5
- Arizona 18
- Arkansas 3
- California 58
- Colorado 18
- Connecticut 10
- Delaware 2
- District of Columbia
- Florida 42
- Georgia 11
- Hawaii 3
- Idaho 13
- Illinois 21
- Indiana 19
- Iowa 17
- Kansas 7
- Kentucky 12
- Louisiana 6
- Maine 5
- Maryland 15
- Massachusetts 15
- Michigan 21
- Minnesota 19
- Mississippi 6
- Missouri 4
- Montana 4
- Nebraska 3
- Nevada 2
- New Hampshire 4
- New Jersey 15
- New Mexico 4
- New York 47
- North Carolina 28
- North Dakota
- Ohio 20
- Oklahoma 6
- Oregon 7
- Pennsylvania 20
- Puerto Rico 2
- Rhode Island 2
- South Carolina 10
- South Dakota 2
- Tennessee 15
- Texas 47
- Utah 12
- Vermont 2
- Virginia 32
- Washington 18
- West Virginia 2
- Wisconsin 19
- Wyoming 3
Triathlon Calendar United States 2026-2027
Monthly updates for United States
Get new running races (and updates) in your inbox every month.
Explore the best triathlons in the United States for 2026-2027! Our updated list features 680 exciting races across the country. Find your next race in the United States below and join the running community at these great events!
September 2026
A two person partner triathlon in Columbia TN with a 3.5 mile Duck River canoe, 7.5 mile mountain bike single track, and a 2.65 mile trail run.
Sea Cliff Triathlon on 09/19/2026 takes place at Harry Tappen Beach and offers individual, youth, and several relay formats with swim, bike, and run legs and specified team rules and fees.
Rise & Run in Denmark, WI combines a run-bike-run duathlon with individual and two or three person relays plus a free one mile fun run where leashed dogs and strollers are allowed; proceeds support Arise missions.
A point-to-point adventure race in Nickerson State Park combining trail running, road cycling and swim or paddle options, open to solo competitors and teams of two to four.
Community triathlon at Town Park at Point Lookout on September 19, 2026 featuring a half mile swim, six mile bike and two mile run.
A USARA-sanctioned 12 hour team adventure race in Sausalito combining paddling, mountain biking, and trekking across the Marin Headlands and San Francisco Bay with map-and-compass navigation and a central transition area.
A one day, multi discipline adventure race in Greenfield, MA on September 19, 2026 combining mountain biking, trekking and paddling over a 15 hour course. The event is USARA sanctioned and requires teams to supply boats or follow an alternate route.
A community fundraising event at Oakdale Trails featuring timed mountain bike single-track races, a 5k cross-country run and ruck, youth races, vendors, and activities to support Friends of Oakdale Trails.
A dry triathlon in Billings on September 19, 2026, combining rowing, bodyweight reps, and a 5 km run or a shorter sprint option. Registration opens July 1, 2026; the entry fee is $50 and racers receive a $25 Scheels gift card.
A combined 5K trail run and 3K paddle at Chatfield State Park in Littleton, Colorado, with limited participant slots and paddleboard rentals available. Categories include men's, women's, and a couples relay where teammates split the run and paddle.
IRONMAN 70.3 Michigan in Frankfort, MI features a Betsie Bay swim, a bike on historic highway M22 through Benzie County and a two loop 13.1 mile run.
A triathlon at Devil's Lake in Baraboo, Wisconsin on September 20, 2026, offering sprint individual, sprint relay, and a Wisconsin Triathlon Series entry. Distances include a 400 m swim, a 15 mile bike, and a 5K run.
Multisport races at Lake Welch Beach in Harriman State Park combine a 0.5 mile lake swim, a 15 mile bike loop, and a 2 mile run. Adult races have entry fees while junior participation is free.
Sprint triathlon at Marsh Creek State Park with a time trial swim in Marsh Creek Lake, a single 20 km bike loop and a 5 km run with lake views.
A multi-race day at Robious Landing Park in Midlothian, Virginia featuring sprint triathlon, duathlon, aquabike, youth races, and an NCAA draft legal collegiate cup. All finishers receive a medal and overall and age-group awards are presented.
The Reston Triathlon is an Olympic-distance race in Reston, Virginia, with a 1500 m open-water swim in Lake Audubon, a 25-mile bike and a 10K run. The program also includes an aquabike and an Olympic relay option.
Multisport races at Bayview Park on Long Beach Island on September 20, 2026 feature triathlon, duathlon, aquabike and relay options, with bay swims and flat road bike and run courses, awards across multiple divisions, and USAT rules in effect.
Experience a beach start at Illinois largest man made lake followed by a flat bike course and a finish over the dam spillway. This event offers individual and relay options across triathlon duathlon and aquabike distances.
A sprint triathlon and duathlon at Horseneck Beach State Reservation on September 20, 2026 featuring a 1/3 mile swim, a 13.3 mile bike through Westport farm country, and a 3.1 mile run finishing along the beach path.
A multisport event at Stony Creek Metropark in Shelby Township, Michigan featuring Olympic, Sprint and Super Sprint triathlon formats, duathlon and aquabike races plus relay options. Registration opens November 27 2025.