Tri Boulder - Boudler, Colorado - Triathlon

About The Tri Boulder

The Tri Boulder is a Triathlon race in Boudler, Colorado consisting of a Super Sprint, and Duathlon race consisting of a Sprint

The Beast' Long Course distance will be back for its second year! As one of Colorado's most popular summer triathlons, Tri Boulder offers many different multisport race distances, all in one eventful day.



Take in the natural beauty of the mountain backdrop that sets the scene for this iconic race destination. Most of the bike course will take place on rural Boulder county roads, with spectacular views of the Flatirons and surrounding green fields.

Enjoy the after-race party with music, post-race food & beer, plus an awards ceremony with awards and prizes. Mark your calendar for this epic race at the end of July!