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
Join CLASH Coastal Mississippi March 27 to 29, 2026 at Jones Park in Gulfport for a three day triathlon festival featuring Daytona and sprint triathlon, duathlon, and relay options. Race scenic coastal swim bike and run courses with aid and support f..
Join the Merrill Ranch Triathlon in Florence AZ March 28 for pool swims, scenic two loop bike and run courses and events for adults, youth, aquabike, duathlon and relays. Finishers earn medals, a race hoodie and post race refreshments.
Start your season at IRONMAN 70.3 Oceanside with a protected harbor swim, a scenic bike through Camp Pendleton, and a beachfront finish on The Strand. Coastal views and lively race day energy await.
Smithfield Sprint Triathlon on March 28, 2026 blends a pool swim, a scenic 10 mile rural bike and a flat 5K run. Choose individual, aquabike or team relay for a fast, friendly race day with medals, tech shirt and post race BBQ.
Join a sprint triathlon at Fort Gordon featuring a 300 meter pool swim, a 10 mile bike and a 5K run to support military causes. Military and student athletes must show ID and non DoD visitors must preregister for base access.
Race the ROC Indoor Tri at the Jewish Community Center in Rochester on March 28, with adult and kids divisions. Swim, spin, and run in three fast 15 minute efforts for a compact 45 minute event packed with awards and friendly competition.
Take on IRONMAN 70.3 Texas in Galveston on March 29, 2026, featuring a scenic swim in Galveston Bay and flat bike and run courses around Moody Gardens. Fast coastal conditions and World Championship qualifying slots make this a must race.
Kids 6 to 15 race short or long duathlon courses at Pensacola's Vince J Whibbs Community Maritime Park in the Zarzaur Law Maritime DeLuna Duathlon. All finishers get a medal and t shirt and there is a category for athletes with disabilities.
Cal Tri Austin on March 29 in Austin, Texas is a multi sport festival with 18 events from sprint to Olympic and youth categories. Triathlon, swim bike, swimrun and Run Bike Run options welcome all levels and youth racing is free.
Join the 2026 Shelbyville Triathlon Series, three races from March 1 to April 19 in Shelbyville KY, featuring indoor pool swims, rolling bike loops and out and back park runs. Complete all three for a series medal and enjoy post race showers.
April 2026
Join the Pinehurst Triathlon Festival on April 11, 2026 at Pinehurst Marina for sprint and international distances with individual, relay and aquabike options. Enjoy lake swims, quiet roads and a scenic run loop around Lake Pinehurst.
Join the Escape From Fort DeSoto Triathlon and Duathlon on April 11, 2026 at Fort DeSoto Park for sprint swim, bike and run courses with chip timing and a finisher medal. Scenic waterfront roads and a capped field make for a fast, fun race.
The Stubborn Fool Adventure Race is a choose your own route adventure near Black River Falls WI with solo and team divisions. Use map and compass to find hidden checkpoints on forest trails and gravel roads and pick your fastest route.
Join the Lifeline Duathlon benefiting 232 HELP in Lafayette on April 11, 2026 for a spirited run 2 miles, bike 10 miles, then run 2 miles course. Solo and 2 or 3 person relay teams welcome, ages 1 to 100, with awards and shirts available.
Take on the 24 hour Shenandoah Epic Adventure Race in Bentonville VA, blending paddling, trekking and mountain biking over rugged terrain and river. Solo or team entries challenge navigation, endurance and teamwork across day and night.
Join the Cedar Creek Spring Duathlon on April 11, 2026 at Cedar Creek Park in Seaford NY. Tackle a fast run bike run course solo or as a relay, or join virtually for a spring fitness challenge.
Choose the 33 mile Ultra or shorter 1 mile to half marathon routes on scenic country and gravel roads between Odell and Ellis, Nebraska. This non competitive community event features medals, post race fellowship and a meal.
Experience the Texas Draft Legal Cup in Fort Worth on April 11 and 12, 2026, a USAT Junior National Series weekend spotlighting the nation’s top youth and junior draft legal triathletes. Saturday includes kids races and non drafting events.
Challenge yourself at the Cocoa Beach Triathlon on April 12, 2026 in Cocoa Beach, Florida. With sprint, duathlon, relay and aquabike options, this sun and surf race offers beachside scenery and courses for every level.
Join the 2026 Cal Tri at Lake Perris on April 12 for sprint and Olympic triathlons plus RunBikeRun, SwimBike, SwimRun and standalone swim and run options. Camping and RV spots available; youth ages 7 to 17 race free.