Thinking of Joining USA Triathlon?

Be a part of our 550,000 member community of multisport athletes. Membership benefits include a subscription to the quarterly USA Triathlon magazine, discounts from USA Triathlon partners, inclusion in the national rankings, excess accident insurance at events, and savings at races. To see why you should join or renew today, visit the membership benefits page. Already a member? Login below.

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What's your preferred multisport discipline?

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About the Disciplines

Triathlon, Duathlon, Aquathlon, Winter Triathlon, Off-Road, Aquabike. Wondering what sport best matches your interest and skills? Learn more about the sports that USA Triathlon helps support throughout the country.

Swim, bike, run. Though the basic format stays the same, triathlon has several racing distances, from the youth events all the way up to double and triple ultra-distance events. Athletes of all shapes, sizes, ages and fitness levels compete in triathlon yearly to prove that when you put your mind to something, anything is possible.

Duathlon is a run-bike-run combination. It is sometimes confused with biathlon, which is the official term for the Olympic sport of skiing and shooting. Typically contested in run – bike – run formats, duathlons are varied in length.

Aquathlon is a fun and fast-growing sport that combines running and swimming. A typical aquathlon is a run/swim/run combination; however it is not uncommon to see a two-stage race that is simply a swim/run combination.

Off-road events offer a great way to get into multisports for mountain bikers, trail runners, or for those with an adventurous side who don’t mind getting a little dirty.

Winter Triathlon
Winter triathlon involves running, mountain biking, and cross-country skiing – all performed on snow. It is a perfect way to learn new sports, improve your base fitness and expand your skills as a multisport athlete.

Multisport can take many forms. One that is becoming popular of late is Aquabike, a swim/bike combination that has become a favorite of injured athletes who can no longer run.