Hagg Lake Triathlon & Trail Festival

Registration for the 2026 Hagg Lake Triathlon & Trail Festival will be open November 1st! With a new event date weekend 

RACE AT THIS HISTORICAL EVENT AND STUNNING VENUE!

Hagg Lake Triathlon & Trail Festival – Rich in Beauty, Rich in Tradition!

Come race at the 45th Annual Hagg Lake Triathlon & Trail Festival, one of the oldest and most gorgeous Triathlon courses in the nation! Now offering a Paddle Triathlon & an Off-Road Triathlon, Half Marathon Trail Run and 5K Trail Run!

Olympic & Sprint Triathlon, Duathlon, Paddle Tri & AquaBike & OFF ROAD SPRINT TRIATHLON, DUATHLON & AQUABIKE, Half Marathon TRAIL FUN and 5K TRAIL RUN! Relay options available too perfect for friends, family & co-workers!

The modern sport of triathlon had its modest beginnings with an event held in Mission Bay in San Diego, CA on September 25, 1974. There were 46 athletes that day. Seven years later, Hagg Lake Triathlon became one of six stops on the Bud Light Triathlon Series Tour drawing about 500 athletes, with Dave Scott coming out on top. Today, as one of the nation’s oldest and longest running triathlon events, Hagg Lake enters its 44th year and it continues to draw upwards of 700+ athletes. Its popularity is rooted in the rich tradition and the exceptional venue, which is one of the most scenic in the country. The Hagg Lake course offers a true test of this terrific sport with its rolling hills on both the bike and run leg portions of the event. Make the Hagg Lake Triathlon & Trail Festival one of your summer stops and compete on the course that has seen many of the greats in the sport of triathlon.