Colorado Multisport Calendar

Boulder Sunset Triathlon

Boulder Reservoir 5275 Reservoir Road, Boulder, CO, United States

Join us for an unforgettable morning at the Boulder Reservoir. Although this race does not take place at sunset, it will take place at the end of the summer-- it's […]

XTERRA Tremblant

Domain St-Bernard, Quebec, Canada Domain St-Bernard, Quebec, Canada

Welcome to XTERRA Tremblant. This will be year three of this amazing off-road event in the heart of Quebec's triathlon mecca. The venue is a unique ecological preserve that is […]

IRONMAN Canada

Penticton, British Columbia Penticton, British Columbia, Canada

Harvest Moon Long Course Triathlon

Boulder Reservoir 5275 Reservoir Road, Boulder, CO, United States

The Harvest Moon Triathlon the 23rd edition of this event takes place at the beautiful Boulder Reservoir on September 10th, 2022. Est. in 2000 this Colorado classic provides the veterans […]

Littlefoot Triathlon

Bear Creek Lake Park (Lakewood) 15600 W. Morrison Road, Lakewood, CO, United States

Enjoy a fun late season tri at beautiful Bear Creek Lake Park in the Lakewood/Morrison area. Set at the base of the foothills, the Littlefoot Triathlon starts off with a […]

Run the Rockies Road 10K & Half Marathon

Frisco Frisco, CO, United States

The Run the Rockies Road 10k and Half Marathon will feature the traditional Run the Rockies Road Race course with runners starting near Copper Mountain; runners will follow the paved […]

Pikes Peak Ascent

Manitou Springs Manitou Springs, CO, United States

The Pikes Peak Marathon, founded in 1956, is the oldest continually held marathon in the United States, taking runners from Manitou Springs, Colorado, to the summit of Pikes Peak at […]

Pikes Peak Marathon

Manitou Springs Manitou Springs, CO, United States

The Pikes Peak Marathon, founded in 1956, is the oldest continually held marathon in the United States, taking runners from Manitou Springs, Colorado, to the summit of Pikes Peak at […]

Oktoberfest Sprint Triathlon

Union Reservoir (Longmont) 461 County Road 26, United States

The Oktoberfest Sprint Triathlon features a half mile lake swim, a flat and fast single loop 12.9 mile bike, and finishes with a 3.1 mile run on a gravel road […]

Last Call Triathlon

Boyd Lake State Park (Loveland) 3720 N County Road 11-C, Loveland, CO, United States

Yes! I want ONE MORE adventure!! Escape to the lake! The Last Call Triathlon will be an event you’ll look forward to all season long. Why? Beautiful mountain views, great […]

Boulder Peak Triathlon logo