United States
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Alabama9
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Alaska7
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Arizona10
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Arkansas2
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California38
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Colorado8
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Connecticut3
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Delaware3
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District of Columbia
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Florida46
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Georgia13
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Hawaii1
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Idaho9
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Illinois15
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Indiana21
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Iowa8
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Kansas5
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Kentucky9
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Louisiana3
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Maine7
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Maryland11
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Massachusetts17
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Michigan27
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Minnesota16
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Mississippi3
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Missouri14
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Montana3
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Nebraska3
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Nevada
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New Hampshire
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New Jersey23
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New Mexico3
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New York51
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North Carolina30
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North Dakota
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Ohio12
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Oklahoma6
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Oregon9
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Pennsylvania16
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Puerto Rico
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Rhode Island1
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South Carolina14
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South Dakota
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Tennessee22
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Texas44
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Utah15
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Vermont
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Virginia33
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Washington13
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West Virginia5
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Wisconsin24
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Wyoming2
Triathlon Calendar United States 2025-2026
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 2025-2026! Our updated list features 632 exciting races across the country. Find your next race in the United States below and join the running community at these great events!
May 2026
Experience ÖTILLÖ Swimrun on Orcas Island: scenic lake swims, forest trail runs and mountain climbs around Moran State Park. Choose from sprint to longer World Series courses and race across rugged island terrain with ocean views.
Join the PDX Triathlon Festival at Blue Lake Regional Park in Fairview OR on May 31, 2026 for flat fast swim, bike and run courses and distances for all abilities. Enjoy an expo, post race food, music and kids events while supporting local charities.
June 2026
Join a summer series of three fast super sprint triathlons in lakeside Cassadaga NY with short swim bike and run plus AquaBike and relay options. Race one night or the full series as points add up toward season standings and awards.
Endurance Fest in Corpus Christi from June 5 to 7 features running, walking and bike events along the scenic Water's Edge Park waterfront. Choose distances from a kids 1K glow run to a 41 mile bike tour, earn medals and swag for early registration.
Join the Team Rocket Heel & Crank Duathlon in Huntsville, Alabama this early June 2026 for a fun run, bike, run challenge set in Research Park at ADTRAN. Individual and relay teams welcome, with registration opening January 13, 2026.
The Best in the West Triathlon Festival on June 6 and 7, 2026 at Lewis Creek Park features lake swims, rolling bike routes and wooded shoreline runs around Foster Reservoir. Camp on site then celebrate with a barbecue, live music and awards.
Join the 39th Milkman Triathlon on June 6, 2026 in Dexter New Mexico, a scenic sprint at Lake Van with a 0.5 km swim, 20 km bike and 5 km run. Soloists and mixed teams welcome with chocolate milk and ice cream at the finish.
America's Race Leon's Triathlon in Hammond, Indiana June 6 to 7, 2026 offers sprint and Olympic races, relays, a paratriathlon qualifier and a kids Splash and Dash. The race honors Military, Veterans and First Responders, welcoming all levels.
Join the 20th Annual Beaufort River Swim and 5K Run on June 6, 2026 in scenic downtown Beaufort, SC for open water swims, relay fun and a waterfront 5K finish. Proceeds benefit the Wardle Family YMCA Learn to Swim program.
Take on a sprint triathlon or duathlon at the Tri Shark Classic in Comlara Park, Hudson, on June 6, 2026. Flat, fast courses and relay options make this a perfect summer test for newcomers and seasoned racers alike.
The Innsbrook Triathlon on Saturday June 6, 2026 in Wright City MO offers sprint and Olympic distances plus aquabike and relay options. Swim Lake Aspen then bike rolling hills and run a mixed gravel and pavement course.
Race a fast, flat triathlon along the Boise River on June 6, 2026, with swim, bike and run distances for all levels. USAT sanctioned as the Idaho State Championship, the event features relays, youth and adaptive categories.
Race the Conneaut Lake Sprint Triathlon at Fireman's Beach with individual and relay sprint distance options. Swim 650 yards, bike 13.6 miles and run 3.1 miles, enjoy a T shirt and post race food while supporting cystic fibrosis.
Join Tri the Parks at Lake Lanier on June 6, 2026 for a sprint triathlon, duathlon, aquabike or relays featuring a 600 m swim, 14.7 mile bike and 5 km run. Fast, scenic and perfect for racers of all ages.
A scenic sprint tri at Long Pond in Wellfleet with a kettle pond swim and paved bike and run through pine forest. Choose individual, relay or virtual entry while supporting local community causes.
Join the Annie Oakley Buffalo Bill Triathlon and AquaBike at scenic Poplar Tree Lake, offering Super Sprint, Sprint, Olympic and Sprint Duathlon options for youth and adults. Finishers get a custom shirt and medal, plus post race food, beer and a spo..
Race scenic Island Lake State Recreation Area in southeast Michigan with triathlon, duathlon, aquabike and relay options. Enjoy open water practice swims and rolling wooded courses through forest and meadows.
Jump into the Clear Lake Triathlon on June 6, 2026 at Clear Lake Beach and Pub in Fremont Indiana, offering sprint and Olympic distances plus duathlon options. USAT sanctioned event with chip timing, shirts, medals and age group awards.
Join Clear Lake Tri on June 6, 2026 for Sprint and Olympic triathlon plus duathlon and aquabike options. Swim from a sandy beach, bike scenic rolling roads and finish with a flat run and lively community support.
Kick off early summer with the Sager Creek Triathlon on June 7 at the JBU Walton Lifetime Health Complex in Siloam Springs. Choose Sprint or International distances for a pool swim, rolling hill bike and a campus trail run with hometown vibes.