Triathlon Calendar United States 2025-2026

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Explore the best triathlons in the United States for 2025-2026! Our updated list features 617 exciting races across the country. Find your next race in the United States below and join the running community at these great events!

June 2025
The Innsbrook Triathlon, set in the scenic Innsbrook Resort near St. Louis, offers a variety of competitive events including Sprint and Olympic distances, Aqua bike, and relay options. Participants ca..
The 16th Annual Napoleon Rotary Triathlon, presented by the Henry County Hospital, features a variety of events for participants aged 7 and up. Scheduled for June 7, 2025, the triathlon includes indiv..
The Dragon Fly Triathlon, scheduled for June 7, 2025, in Sardis, MS, features both Sprint and Olympic distance events. Participants can choose from various categories, including individual, relay, and..
The Robert J. Aaron Memorial Mighty Montauk Triathlon is a celebrated annual event taking place in Montauk, NY, known for its scenic courses and community spirit. Established in 1982, the triathlon fe..
The Coolest Ride and Tie and Equathon is an exciting outdoor event taking place in the scenic Auburn State Recreational Area, Cool, CA. Participants can engage in two main activities: the Ride and Tie..
The 2025 Cal Tri DC event, scheduled for June 8, 2025, offers a diverse range of athletic competitions at General Smallwood State Park in Marbury, Maryland, just 30 miles from Washington, D.C. Partici..
The DeSatnick Real Estate Escape the Cape Triathlon is a premier triathlon event held in Lower Township, NJ, featuring a unique jump off the Cape May-Lewes Ferry. This annual event includes various co..
The Oakdale Spring Classic Du is a welcoming duathlon event held at the scenic Lake Elmo Park Reserve, ideal for both novice and experienced participants. The race features a traditional format consis..
The IRONMAN 70.3 Des Moines is a premier triathlon event set in the vibrant city of Des Moines, Iowa. Participants will experience a scenic swim in Gray’s Lake, followed by a flat bike course that sho..
The IRONMAN 70.3 Eagleman is a renowned triathlon event held in Cambridge, Maryland, featuring a 1.2-mile swim in the Choptank River, a 56-mile flat bike course through the scenic Blackwater National..
The IRONMAN 70.3 Western Massachusetts is an early-season triathlon event that showcases the scenic beauty of New England. Athletes will experience a 1.2-mile swim in the Connecticut River, followed b..
The Jamestown Triathlon, scheduled for June 8, 2025, in Williamsburg, VA, features a variety of events including the Olympic and Sprint Triathlons, Aquabike options, and relays. Participants can enjoy..
The VI TRI is an exciting triathlon event taking place in Visalia, California, featuring a variety of competitions suitable for both beginners and experienced athletes. Participants can choose from ev..
The Harvest Triathlon, taking place in Wareham, MA, features a variety of events including Individual Sprint, Sprint Relay Team, Individual Olympic, Olympic Relay Team, and Aquabike options. Set again..
The Sager Creek Triathlon, scheduled for June 8, 2025, in Siloam Springs, Arkansas, features two main events: the Sprint and the International triathlon. Participants will compete in a swim, bike, and..
The T-Gator Triathlon is set to take place at Sam Houston Jones State Park in Lake Charles, Louisiana. This exciting event features a Sprint Distance Triathlon, which includes a 525-meter swim in the..
The Keuka Lake Triathlon is a prominent event in the Finger Lakes Region, taking place at Keuka College. This triathlon features various competitions, including Intermediate and Sprint Triathlons, Aqu..
The Sylvan Beach Tri/Du is a multi-sport event taking place at Sylvan Beach Park in La Porte, Texas. Scheduled for June 8, 2025, it features a variety of races including an Olympic Distance Triathlon,..
The Bare Hill Sprint Triathlon, Duathlon, and Aquabike will take place in Harvard, MA, on June 8, 2025. This grassroots event caters to both novice and experienced multi-sport athletes, featuring a Sp..
The 2025 Cal Tri Castaic Lake event, scheduled for June 14, 2025, offers a variety of competitive options for athletes of all ages and skill levels. Participants can choose from multiple events, inclu..