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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Utah12
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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 628 exciting races across the country. Find your next race in the United States below and join the running community at these great events!
March 2026
Kick off the 2026 North Carolina Triathlon Series in Wilmington at UNCW with a sprint tri featuring a 300 yard pool swim, 12 mile bike and 5K run. Individual, relay and aquabike entries welcome for racers of all levels.
Join the first annual Cape Cod Indoor Triathlon at the YMCA in Hyannis on Sunday March 8. Swim, bike and run on facility equipment in timed 15, 25 and 20 minute segments; spots are limited.
The Drift is a winter multi discipline race along the scenic Green River corridor with running, fat bike and ski options. Choose 13, 28 or about 100 mile routes that cross flat river sections and remote high elevation terrain.
Rocky Hill Triathlon in Exeter CA on March 14, 2026 offers short and long triathlon courses plus 5k and 10k races. Pool swims and valley to foothill bike and run routes deliver scenic views, challenging climbs and finisher swag.
Join the Oro Valley Triathlon and Duathlon Festival in Oro Valley AZ on March 14, 2026, offering pool swims, traffic controlled bike routes and flat run loops for beginners and seasoned racers. USAT sanctioned event with multiple race formats and age..
Experience the Tanana River Challenge in Fairbanks on March 14, 2026. Pick 25 or 45 miles to run, ski, skijor or bike along scenic river and forest trails and finish with a lively post race gathering.
Tackle the Frozen Foot Challenge at Pocahontas State Park for a thrilling mountain bike and off trail trekking adventure across fast single track and rolling woods. Choose 5 or 10 hour timed races solo or with a team and enjoy race swag, GPS tracking..
TRI 4 THE CURE AZ is on Saturday March 14 2026 at Anthem Community Center in Anthem AZ. Choose sprint or super sprint triathlon, aquabike, duathlon, relays or a 5 km run and finish with a medal and race hoodie.
Take on a fast paced indoor sprint triathlon in Lemont with a 10 minute swim, 15 minute bike and 15 minute run, all timed and stacked into 20 minute heats. Perfect for newcomers and seasoned athletes seeking a compact high energy challenge.
Join MomsTRI Women's Sprint Triathlon in Goodyear AZ on March 14, 2026 with individual, 2 person and 3 person relays, a youth race and a virtual option. Proceeds support New Life Center and finishers receive a T shirt and swag.
Join Cal Tri at Lake Havasu State Park on March 15, 2026 with 18 race options from youth sprints to Olympic distance triathlons and open water swims. Wetsuit legal Colorado River waters and nearby beaches make it a scenic race weekend.
Race IRONMAN 70.3 Dallas Little Elm on March 15, 2026 with onsite PLAYTRI bike rentals, repairs and race prep to keep you race ready. Visit PLAYTRI for rental levels and tune up options.
Take on the 2026 HealthQuest Indoor Triathlon in Flemington NJ on March 15 with a pool swim, indoor cycle and treadmill run all under one roof. Participants get a six week training plan, T shirt, swim cap, seminars and a finisher medal.
Race seaside in Fort Pierce at Jaycee Park with sprint and Olympic triathlon, duathlon, aqua bike and team relays. Swim the calm Indian River Lagoon, bike scenic A1A and finish with a view along the oceanfront.
Escape the Swamp Triathlon in Gainesville on March 15, 2026 features pool swims and bike and run courses through the University of Florida campus. Choose Super Sprint or Sprint for a fast, fun race with medals and shirts.
Join Desert Endurance Tucson Triathlon Camp March 18 to 22, 2026 to sharpen swim, bike, and run through focused coaching in sunny Tucson. Four coaches offer personalized technique, fueling, and mental prep plus a Mt Lemmon climb.
Kick off your season at the TriUtah Ice Breaker Sprint Tri on March 21, 2026 in American Fork, Utah. Choose sprint tri, aquabike, duathlon, aquathon, or relay as you tackle a 300 m swim, 13 mile bike and 5 km run.
Come to the NorthPointe Wellness Indoor Triathlon Series in Roscoe from Jan 31 to Mar 21, 2026 for three indoor swim, stationary bike and treadmill run events. Enter single races or the whole series for medals and fun.
Join the Luck of the Irish Triathlon in McKinney, Texas with sprint and super sprint triathlons, relays, Run Bike Run and a 5K. Swim a 50 meter outdoor pool snake swim then bike and run through Craig Ranch for all levels.
Take on the White Mountains 100, a 100 mile winter race in Alaska where runners, skiers, and bikers tackle a remote loop on snow trails. Arctic weather and rugged terrain demand strong winter skills.