Known for its stunning outdoor scenery, breathtaking views from the Boise River Greenbelt and a vibrant downtown, IRONMAN 70.3 returns to Boise.

A brand new addition to the IRONMAN 70.3 North America circuit for 2025 – IRONMAN 70.3 Rockford-Illinois.

Brand new to the circuit for 2025 – IRONMAN Ottawa.

USA Triathlon, in association with Clash Endurance and Daytona International Speedway hosts this one-of-a-kind event for the whole family including the USAT Long Course National Championships in triathlon, duathlon and aquabike, as well as a kids triathlon and a 5k Jingle Jog through the holiday lights.

New to the US circuit for 2024, IRONMAN 70.3 Canada-Penticton in British Columbia now allows 70.3 athletes to compete in this bucket list destination.

Join us in Atlantic City at historic Bader Field, for the 2024 USA Triathlon Olympic and Sprint Distance National Championships.

USA Triathlon, in partnership with Omaha Sports Commission and the City of Omaha, Neb., confirmed that Omaha will host the 2024 and 2025 USAT Multisport National Championships Festival at Lake Cunningham.

The return of an icon. The Inaugural IRONMAN 70.3 Louisville is proud to be part of Louisville’s rich sports heritage as we welcome athletes from all over to enjoy a truly one-of-a-kind IRONMAN 70.3 race experience.

Join us for the 40th running of the Los Angeles Marathon, presented by ASICS in March 16 2025.

Whether you’re climbing to the top of Sugarloaf Mountain or descending into Siberia Canyon, the courses on the Kodiak Ultra Marathons by UTMB® will wow you at every turn.