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  • Mountain Ridge Trail Race

    Mountain Ridge Middle School 10590 Mountain Vista Ridge, Highlands Ranch, CO, United States

    Mountain Ridge takes place near Highlands Ranch primarily on the Douglas County East-West Regional Trail. This gently rolling course will keep the Heart Rate pumping while offering some of the […]

  • RMRR Spring Marathon Training Series #2

    Platte River Trailhead Park Colorado Blvd and E 88th Ave, Thornton, CO, United States

    These Marathon training races are geared towards people training for spring marathons. They are supported runs with aid stations and are timed and scored. There are both 10 mile and […]

  • Amasa Trail Race

    Kane Creek Trailhead Moab, UT, United States

    Amasa Trail Race is a 25K, 15K, 10K through one of Moab's most prized trail systems. Run past petroglyphs, the famous whale rock, red rock, canyons, and the Colorado River, […]

  • Dash for Detection 5K

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

    Be part of a movement at Denver's City Park for our 5K event dedicated to raising awareness about oral cancer. Oral cancer can affect any area of the mouth and […]

  • Rockin’ on the River 5K

    South Suburban Race Series
    Hudson Gardens and Event Center 6115 S Santa Fe Dr, Littleton, CO, United States

    Dust off your well-loved t-shirts and show 'em off at the Rockin' on the River 5K! Pre and post-race music and entertainment for all. Take in the view along the beautiful […]

  • CMRA Clear Creek 5K

    Prospect Park W 44th Avenue and Robb Street, Wheat Ridge, CO, United States

    This race will head west from Prospect Park on the Clear Creek trail on the north side of Clear Creek. There will be a turnaround and part way back there […]

  • 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.

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