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  • 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, […]

  • Recovery Run of the Rockies 5K

    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 […]

  • 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 […]

  • Denver Broncos Fit 7K

    Empower Field at Mile High 1701 Bryant St., Denver, CO, United States

    All members of Broncos Country, walkers and runners alike, are invited to join the Denver Broncos for the 13th annual Broncos 7K presented by CommonSpirit, Ticketmaster, King Soopers, and Cigna […]

  • Golden Harvest Half Marathon

    El Pomar Youth Sports Park 2230 Executive Cir, Colorado Springs, 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 […]

  • Labor Day Half Marathon

    Featured
    Salisbury Park 11920 N Motsenbocker Rd, Parker, CO, United States

    Celebrate the last blast of summer at the Labor Day Half Marathon. Sweat your socks off and let summer have its last hooray at Parker's Salisbury Park just a few miles southeast of Denver. There's a distance to meet every taste with a half marathon 10K and 5K.

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