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  • 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.

  • American Heroes Run

    Rogers Grove Park 220 North 95th Street, Longmont, CO, United States

    The tragic events of 9/11/01 changed our nation forever. Let us not forget our proud history and those who fight everyday to keep us free. Please join us for this […]

  • Flaming Foliage Relay

    Citizens Park 17th Ave & Miner St, Idaho Springs, CO, United States

    Flaming Foliage is a 165 mile overnight team relay race adventure with single track trails, from Idaho Springs to beautiful Buena Vista, over Guanella, Georgia & Fremont Passes. Since 2013, […]

  • Snow Mountain Ranch Trail Festival

    YMCA of the Rockies - Snow Mountain Ranch 1101 County Rd #53, Granby, CO, United States

    Join us at the YMCA of the Rockies in Granby for the annual Snow Mountain Ranch Trail Running Festival. This event features 4 races with 2 different "challenges".  Races will […]

  • Littlefoot Sprint Triathlon

    Bear Creek Lake Park 15600 W Morrison Rd, Lakewood, CO, United States

    Enjoy a fun late season tri at beautiful Bear Creek Lake Park in a land before time. Set at the base of the foothills, the Littlefoot Triathlon starts off with […]

  • Black Squirrel Half Marathon

    Lory State Park 708 Lodgepole Dr, Bellvue, CO, United States

    The Black Squirrel Trail Half Marathon takes place on the wonderful trails of Lory State Park to the northwest of Fort Collins, CO. The trail half marathon course offers a […]

    $90 – $125

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