Colorado Multisport Calendar

Longmont Kids Triathlon

City of Longmont Recreation Center 310 Quail Rd, Longmont, CO, United States

Join us for two triathlon races! Featuring scenic running and biking courses starting and finishing at the Longmont Recreation Center, 310 Quail Rd., these races are a perfect introduction to […]

Longmont Try a Tri

City of Longmont Recreation Center 310 Quail Rd, Longmont, CO, United States

Join us for two triathlon races! Featuring scenic running and biking courses starting and finishing at the Longmont Recreation Center, 310 Quail Rd., these races are a perfect introduction to […]

Outdoor Divas Sprint Triathlon

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

The Outdoor Divas Sprint Triathlon features a half mile lake swim, a flat and fast single loop 12.4 mile bike, and finishes with a 3.1 mile run on a gravel […]

XTERRA Lake Tahoe

Lake Tahoe, California Lake Tahoe, CA, United States

An all-time classic off-road triathlon course! Triathletes will start from a new location at Sand Harbor State Park in Lake Tahoe, one of the purest and deepest lakes in North […]

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 […]

Boulder Peak Triathlon logo