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  • Breakthrough T1D Walk

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

    As the leading global type 1 diabetes (T1D) research and advocacy organization, Breakthrough T1D has played a crucial role in nearly every major T1D breakthrough in history. No organization does […]

  • Highland Homecoming 5K

    Highland High School 210 W First St, Ault, CO, United States

    Join us for the Annual Highland Homecoming 5k Run & Walk. This race benefits the middle and high school cross-country teams.

  • EDT XC Showdown

    Aurora Sports Park 19300 E Colfax Avenue, Aurora, CO, United States

    Whether you run for a team, as an individual, or you just want to try out the experience of running a cross country race, you are welcome to join us […]

  • Run the Rocks 5K/10K

    Red Rocks Amphitheatre 18300 W Alameda Pkwy, Morrison, CO, United States

    Let every step you take make a profound impact on lung health and clean air in Colorado! The American Lung Association in Colorado proudly offers the only timed race event […]

  • Joy & Justice 5K

    Timnath Reservoir 5824 County Rd 40, Timnath, CO, United States

    Join us for the Race for Joy & Justice 5K, a family-friendly run/walk event benefiting the Joy & Justice organization based in Timnath, Colorado. This exciting event brings together people […]

  • Boulder Skyline Traverse

    Runners Roost - Boulder 629 S Broadway, Boulder, CO, United States

    The Boulder Skyline Traverse is a ~18 mile trail route that covers the 5 peaks of Boulder (South Boulder Peak, Bear Peak, Green Mountain, Flagstaff Mountain, and Mt. Sanitas). You'll […]

  • Blue Sky Trail Marathon

    Blue Sky Trailhead County Road 38e, Fort Collins, CO, United States

    Taking place on the trails between Horsetooth Mountain Park and the Devil’s Backbone Open Space, the Blue Sky courses take you on a north-south tour of the easternmost hogbacks of […]

    $90 – $130

  • Cowboy Half Marathon

    Mancos Public Library 211 W. 1st, Mancos, CO, United States

    With a new race date for 2021, the Mancos Cowboy Half Marathon and 5k is a beautiful and scenic course with a mix of pavement, dirt road, and trail.  Grab […]

  • CSU Homecoming 5K

    CSU Oval Fort Collins, CO, United States

    The Homecoming Race will take place on the Oval for our traditional course. All ages and abilities are welcome. Proceeds from the Homecoming Race benefit the ongoing research efforts and […]

  • Great Trailhead Foot Race

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

    Don't miss the Great Trailhead Foot Race at Bear Creek Lake Park!  Featuring legitimate TRAILS in the shadow of Denver's skyline, you'll love the single-track and dirt as you race […]

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