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  • Mountain Swim Series IV

    Wellington Lake Wellington Lake Rd. Pike National Forest, Bailey, CO, United States

    Highest altitude organized marathon swim event in the country at ~8,000 feet. RACE DETAILS Distance Price* Swimmers 2.5K $110.00   Both skin/wetsuit event options 1-hour swim cutoff** 1 loop around […]

  • Gunni Hi Tri

    Gunnison Community Center 200 E Spencer Ave, Gunnison, CO, United States

    This Sprint Triathlon is proudly brought to you by the Gunnison Parks & Recreation Department. It begins with a 500yard swim (10 laps) at the Community & Aquatics Center, then […]

  • Boulder 5K Taco Run

    Boulder Public Library 1001 Arapahoe Ave, Bouler, CO, United States

    Super charge your Taco Crushing appetite with a run before the Boulder Taco Fest! A non-competitive fun run on some of Boulder’s most beautiful multi-use paths. There’s even an aid […]

  • Log Hill Hustle​ 5K/10K

    Divide Ranch and Club 151 Divide Ranch Cr, Ridgway, CO, United States

    Join us for the Annual Log Hill Hustle 5K & 10K, a scenic fun run/walk hosted by Fortuna Tierra Club in support of local education. Set against the stunning backdrop […]

  • Wellington Swim-Run Challenge

    Wellington Lake Wellington Lake Rd. Pike National Forest, Bailey, CO, United States

    Swimmers may choose to swim with their shoes, paddles, a wetsuit, pull buoy, floaties, rubber duckies, inflatable flamingoes or any other nonmotorized swim aid in this event. Race Course Per […]

  • Rebel Run 5K

    Stapleton Central Park 8801 Martin Luther King Jr Blvd, Denver, CO, United States

    Join Conservation Colorado for the first-ever Rebel Run 5k! Run, walk or stroll to show your passion for Colorado's climate, air, land, water and communities. Create or join a team, […]

  • Rock Hawk Trail Race

    Phillip S. Miller Park 1375 West Plum Creek Pkwy, Castle Rock, CO, United States

    Held on the gorgeous, thrilling and rolling trails of Castle Rock’s Miller Park & Ridgeline Trail systems. While not overly technical, these trails will challenge and excite, as you soak […]

  • Boulder Sunset Triathlon

    Boulder Reservoir 5565 N 51st St, Boulder, CO, United States

    Summer may be coming to an end, but our tri season is still heating up! Join us at the Boulder Reservoir for the 13th Annual Boulder Sunset Triathlon, a local […]

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