Colorado Multisport Calendar

Stroke & Stride

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

The Boulder Stroke & Stride enters its 21st season in 2022, and offers Boulder area athletes a fun 1-lap 750 Meter Swim, or 2-Lap 1500 Meter swim in Boulder Reservoir, followed by a 5k run on the reservoir dam on 8 Thursday evenings (plus one Wednesday evening) throughout the summer. Many participants make their open-water […]

Stroke & Stride

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

The Boulder Stroke & Stride enters its 21st season in 2022, and offers Boulder area athletes a fun 1-lap 750 Meter Swim, or 2-Lap 1500 Meter swim in Boulder Reservoir, followed by a 5k run on the reservoir dam on 8 Thursday evenings (plus one Wednesday evening) throughout the summer. Many participants make their open-water […]

XTERRA Lory

Lory State Park (Fort Collins) 708 Lodgepole Drive, Bellvue, CO, United States

XTERRA Lory Triathlon on June 18th is the perfect kick-off to the year for the seasoned off-road triathlete, or a great opportunity for the road triathlete wanting to try out a mountain bike triathlon for the first time. The XTERRA Lory Triathlon features a 1/2 mile swim in the clear waters of Horsetooth Reservoir (Eltuk […]

Stroke & Stride

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

The Boulder Stroke & Stride enters its 21st season in 2022, and offers Boulder area athletes a fun 1-lap 750 Meter Swim, or 2-Lap 1500 Meter swim in Boulder Reservoir, followed by a 5k run on the reservoir dam on 8 Thursday evenings (plus one Wednesday evening) throughout the summer. Many participants make their open-water […]

Loveland Lake to Lake Triathlon

North Lake Park (Loveland) 2750 N. Taft Ave., Loveland, CO, United States

This event provides a beautiful venue. The transition area and lake are near North Lake Park. North Lake Park is a nice setting for competitors and families. It has a children’s train that operates throughout the day and is adjacent to Benson Sculpture Park, which is the site of Loveland’s annual Sculpture in the Park […]

Boulder Sunrise Triathlon

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

Kick off your summer of racing in Boulder.

Stroke & Stride

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

The Boulder Stroke & Stride enters its 21st season in 2022, and offers Boulder area athletes a fun 1-lap 750 Meter Swim, or 2-Lap 1500 Meter swim in Boulder Reservoir, followed by a 5k run on the reservoir dam on 8 Thursday evenings (plus one Wednesday evening) throughout the summer. Many participants make their open-water […]

Frisco Triathlon

Frisco Bay Marina 267 Marina Road, Frisco, CO, United States

Are you looking for a new challenge this summer? Register for the 8th Annual Frisco Triathlon featuring stand-up-paddle boarding, mountain biking, and trail running. This twist on a triathlon is open to all ability levels and encourages athletes to take on a new multi-sport event. The Frisco Triathlon was named “Best Triathlon” in Elevation Outdoors […]

Pagosa Duathlon

Pagosa Springs Pagosa Springs, CO, United States

​Race routes integrate beginner and intermediate levels of single-track trails, dirt and gravel roads. The venue of the San Juan National Forest could not be more perfect for athletes as they trek through aspen groves, grassy fields, and the dreaded rocky Piedra Stock driveway. The course is fast, testing each competitor’s endurance, speed and ability.

Boulder Peak Triathlon

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

The Boulder Peak Triathlon, Duathlon & Aquabike on July 10th is one of the countries longest and most well-known triathlons. For the veteran or first time racer, this is THE can’t miss event of the summer triathlon season, and the crown jewel of the Colorado Triathlon Series. Racers are tackling the infamous “Olde Stage” Hill, […]

Boulder Peak Triathlon logo