Ironman 70.3 Boulder

Nestled in the picturesque landscape of Boulder, Colorado, the IRONMAN 70.3 Boulder is a triumphant celebration of endurance and athleticism, set against the backdrop of the historic Boulder Reservoir. This revered triathlon event invites athletes and spectators alike to experience the beauty and challenge of this scenic venue.

The Boulder Reservoir, constructed in 1954 and first flooded in 1955, is a 700-acre multi-use facility that not only serves as a vital water supply but also as a stunning recreational hub. The reservoir is part of the larger Boulder Reservoir Regional Park, managed by the City of Boulder’s Department of Parks and Recreation.

During the IRONMAN 70.3 Boulder, participants will embark on a 1.2-mile swim in the reservoir’s crystal-clear waters, followed by a 56-mile bike ride through the rolling terrain of Boulder County, and culminate with a 13.1-mile run that showcases the area’s natural splendor. Spectators can expect an electric atmosphere, with cheering crowds and breathtaking views of the Rocky Mountains.

This event is ideal for serious triathletes, sports enthusiasts, and anyone looking to be inspired by human resilience and the stunning natural beauty of Colorado. Whether you’re competing or just here to enjoy the spectacle, the IRONMAN 70.3 Boulder promises an unforgettable experience in one of the most scenic and historically rich locations in the American West.