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  • Front Range Ultra Dayze

    Centennial Park - Loveland 977 W 1st St, Loveland, CO, United States

    Welcome to Front Range Ultra Dayze! 100 hours of ultra-running madness! Our goal is to bring people from all over the U.S. together for a festival of ultra-running in Loveland, […]

  • Grand Traverse Mountain Run

    Mt. Crested Butte Mt. Crested Butte Ski Resort, Crested Butte, CO, United States

    The Grand Traverse Mountain Run is a point-to-point ultra marathon from Crested Butte to Aspen, Colorado. The course follows the route of the Grand Traverse Backcountry Ski race. In total, […]

  • The Beaver Run

    Riverwalk Center 150 W Adams Ave, Breckenridge, CO, United States

    The Beaver Run is a high-altitude mountain running event held Labor Day Weekend in beautiful Breckenridge, Colorado. Participants can choose from 5K and 10K distances along Breckenridge's scenic paved recreation […]

  • Recovery Run of the Rockies 5K

    Featured
    Fossil Creek Park Lemay Avenue, Fort Collins, CO, United States

    Join us for the 4th Annual Recovery Run of the Rockies 5K on Saturday, September 5, 2026, at Fossil Creek Park in Fort Collins, Colorado! This professionally timed 5K brings […]

  • PPRR Nielson Challenge

    PPRR Nielson Challenge
    North Monument Valley Park 1794 Culebra Ave., Colorado Springs, CO, United States

    Race Format The first time you run this event, you'll establish a base time for yourself. This base time is used to generate a handicap time. The handicap time is […]

  • Golden Harvest Half Marathon

    Westminster Promenade 10600 Westminster Blvd, Westminster, CO, United States

    5k/10k/Half Marathon registration includes a custom bib, designer shirt, and a custom finisher medal! 1 Mile registration is untimed and includes a custom bib, designer shirt, and a custom finisher […]

  • Creede Mountain Run

    Creede Historical Society Museum & Library 15 S Main St, Creede, CO, United States

    The Race Is On! The Creede Mountain Run, established in 1987, celebrates the end of summer and the beginning of fall in our small historic mountain town. This event offers […]

  • Cirque Series 14K

    Arapahoe Basin Ski Resort 28194 US-6, Keystone, CO, United States

    The race begins at 10,780' ft, starting at the base of Arapahoe Basin, Mountain Goat Plaza, head up to the High Noon parking lot, then to last chance.  You will […]

  • Demon Dash 5K

    NAAC Stadium 19500 W 64th Pkwy, Golden, CO, United States

    Lace up your shoes and join us for the Demon Dash at its new course at the NAAC! We're excited to bring this course its new home and onto dirt! […]

  • Wheat Ridge Half

    Colorado Brewery Running Series
    Prost Brewing Company - Wheat Ridge 3801 Clear Creek Dr, Wheat Ridge, CO, United States

    Join us for The Wheat Ridge Half Marathon and 5k on Sunday, July 5, 2026. The course starts and ends at Prost Brewing's newest location - in Wheat Ridge at […]

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