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  • ASDAsh 5K to Beat Tooth Decay

    Library Commons 12950 E Montview Blvd, Aurora, CO, United States

    Join us for the University of Colorado School of Dental Medicine's 6th Annual ASDAsh 5K to Beat Tooth Decay! We are excited to share that our 5K course has been […]

  • Danico Brewing 5K

    Colorado Brewery Running Series
    Danico Brewing Company 18490 East 66th Ave, Denver, CO, United States

    Join us for the Danico Brewing 5k, and great, local craft beer at Danico in northeast Denver on April 11, 2026 Join us for the Danico Brewing 5k on April […]

  • Platte River Half Marathon

    Featured
    Reynolds Landing 6745 S. Santa Fe Drive, Littleton, CO, United States

    Denver's oldest half marathon runs along the Platte River Trail, covering parts of Littleton and Denver.

  • Elevate Kids 5K/10K

    Las Colonias Park Riverside parkway, Grand Junction, CO, United States

    Our mission is to help elevate kids' lives by using unique fundraising efforts to raise awareness for and donate the funds to non-profits that help kids. We do what we […]

    $28.74 – $60.83

  • RMRR City Park 4M

    RMRR Trophy Series
    City Park - Denver 1700 N York St, Denver, CO, United States

    Everyone – slow, fast, or in-between –  can win  at RMRR Trophy Series races.  With our handicap scoring system, we predict YOUR finish time based on recent running results, giving you a great […]

  • Donut Dash

    Featured Colorado Runner Events Six Pack
    Washington Park - Denver 701 S Franklin St, Denver, CO, United States

    The Donut Dash 5K is Denver’s race that ends with doughnuts. Runners and walkers can take advantage of a flat and fast course, and then enjoy fresh doughnuts at the finish. Our mission is to bring people together to have a fun, fit morning.

  • Boulder Track Series #1

    Boulder Track Series
    Niwot High School 8989 Niwot Road, Niwot, CO, United States

    We are pleased to offer 2 x Spring track meets (4/12 & 5/3), for middle distance and distance runners, that will be conducted similarly to the BMC (British Milers Club) […]

  • Rattler Trail Race

    Palmer Park 3343 Paseo Rd, Colorado Springs, CO, United States

    Rattler was created to feature one of Colorado Springs' best city parks, Palmer Park.  Runners will enjoy views of the city and Pikes Peak from the sandstone bluffs, while running […]

  • All-Out Beat the Heat

    Church Ranch Office Park 10170 Church Ranch Wy, Westminster, CO, United States

    One of Colorado's favorite trails meets one of its most glorious parks at our 11th annual Beat the Heat! As courses wind southwest along Big Dry Creek Trail, the remarkable […]

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