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 […]

Tri Boulder

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

As one of Colorado’s most popular summer triathlons, Tri Boulder offers many different multisport race distances, all in one eventful day! Join us for a full day of racing at the Rez.

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 […]

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, […]

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 […]

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 […]

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 […]

Boulder Rez Half Marathon

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

Half Marathon, 10K, 5K, Relay

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 […]

Colorado Triathlon

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

Colorado Sprint Triathlon: 750 meter swim, rolling and fast 17 mile bike, and finishes with a 3.1 mile run Colorado Olympic Triathlon: 1500m swim, 23.5 mile bike, and a 10k run Colorado Olympic Duathlon: 5k run, 23.5 mile bike, and a 10k run Colorado Aquabike: Will feature a 1500 meter swim and a 24.8m bike

XTERRA Wetsuits