Chilly Cheeks Duathlon Series
Denver's low key, low cost multisport winter series!!! The Chilly Cheeks Winter Series is composed of three fun run-bike events at the Cherry Creek Reservoir. We provide a marked and […]
Events
7 events found.
Colorado Multisport Calendar
Duathlon
Events
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Hobie Park 4800 S. Dayton St., Greenwood Village, CO, United States
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Harvest Moon Long Course Triathlon
Boulder Reservoir 5275 Reservoir Road, Boulder, CO, United StatesThe Harvest Moon Half Distance Triathlon: This event takes place at the beautiful Boulder Reservoir on May 31st, 2026 and we couldn't be more excited to be back for another […]
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Colorado Triathlon
Boulder Reservoir 5275 Reservoir Road, Boulder, CO, United StatesColorado 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 […]
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Boulder Sunrise Triathlon
Boulder Reservoir 5275 Reservoir Road, Boulder, CO, United StatesKick off your summer of racing in Boulder.
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Boulder Peak Triathlon
Boulder Reservoir 5275 Reservoir Road, Boulder, CO, United StatesThe 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 […]
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Tri Boulder
Boulder Reservoir 5275 Reservoir Road, Boulder, CO, United StatesAs 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 […]
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Last Call Triathlon
Boyd Lake State Park (Loveland) 3720 N County Road 11-C, Loveland, CO, United StatesYes! 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 […]
