Triathlon Calendar United States 2025-2026

Header image

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 DeSatnick Real Estate Escape the Cape Triathlon is a premier triathlon event held in Lower Township, NJ, known for its unique start with a jump off the Cape May-Lewes Ferry. Scheduled for June 8,..
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, and relays, catering to individual and col..
The VI TRI, taking place in Visalia, CA, is a vibrant triathlon event that caters to both novice and experienced athletes. This USAT sanctioned event features a Super Sprint Triathlon, Triathlon Relay..
The Harvest Triathlon, taking place in Wareham, MA, features a scenic sprint and Olympic distance event set against the beautiful backdrop of the south coast of Massachusetts. Participants can enjoy a..
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 State Park in Lake Charles, Louisiana, featuring a Sprint Distance Triathlon and a Triathlon Relay Team. Participants will tackle a 525-meter..
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 Game On! Escape to Hutchinson Island Triathlon is a multi-sport event taking place in Stuart, Florida, featuring various race formats including International and Sprint Triathlons, Duathlons, Aqua..
The Mini of Fairfield County Seaside Triathlon and Duathlon is a popular annual event held at Seaside Park in Bridgeport, Connecticut. This race features a sprint-distance triathlon and a duathlon, ma..
The 2025 Cal Tri Castaic Lake event, taking place at Castaic Lake in California, features a variety of triathlon and running events suitable for all ages and skill levels. Participants can choose from..
The Lake Minnetonka Triathlon is an annual sprint-distance event held at Excelsior Commons in Excelsior, MN. This community-focused triathlon aims to promote health and wellness while supporting local..
The Conneaut Lake Sprint Triathlon, hosted by ALFA Endurance, is set to take place in Conneaut Lake, Pennsylvania. This event features both individual and relay sprint triathlons, comprising a 650-yar..
The IRONMAN 70.3 Boulder is a premier triathlon event set against the stunning backdrop of Boulder, Colorado, at the foot of the Rocky Mountains. Athletes will experience a unique course that includes..
The Three Lakes Triathlons and Kings Market San Juan Island Runs is an exciting all-sport weekend event set in the picturesque Lakedale Resort on San Juan Island, WA. Scheduled for June 14, 2025, the..