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  • Emerald Mountain Epic

    Howelson Hill Steamboat Springs, CO, United States

    The Emerald Mountain Epic presented by Hard Headed attracts some of the nation's best mountain bike and trail running racers, while still offering incredible opportunities for athletes of all skill […]

  • All-Out Runapalozza

    Apex Center 13150 W 72nd Ave, Arvada, CO, United States

    As those summer mornings are just beginning to cool, join us for a celebration to end the season and our 11th Annual Runapalooza! From the award winning Apex Center, these […]

  • Georgetown to Idaho Springs Half Marathon

    Georgetown Lake Georgetown Lake Road, Georgetown, CO, United States

    Part of the Colorado Mountain Half + Series, Georgetown to Idaho Springs Half Marathon is a Colorado Runner’s Must-Do. This iconic Half Marathon is one of the most pleasurable races in the […]

    $103.68

  • Summer Sizzler 5K

    Carpenter Park 3498 E 112th Ave, Thornton, CO, United States

    Join us for the annual Summer Sizzler!  Whether you are looking to run, walk or just enjoy the race SWAG this race is a sure thing for a great time […]

  • Run the Rockies Trail Half Marathon

    Featured
    Frisco Adventure Park 621 Recreation Way, Frisco, CO, United States

    The Run the Rockies Trail 5k, 10k, and half marathon will lead runners through the Frisco Peninsula trails with breathtaking views of Dillon Reservoir and the Ten Mile Range. This […]

  • Strides For Change

    Sloan's Lake Park 1700 Utica Street, Denver, CO, United States

    Join us on August 8th, 2025 at Sloan’s Lake for Strides for Change – a 5K for Youth Mental Health, presented by Resolute Counseling Center. This community-centered event is more than […]

  • Summer Sizzler 5K

    Cottonwood Creek Park 3920 Dublin Blvd, Colorado Springs, CO, United States

    Join us for the annual Summer Sizzler!  Whether you are looking to run, walk or just enjoy the race SWAG this race is a sure thing for a great time […]

  • Rocky Mountain Tri-Fest

    Boulder Reservoir 5565 N 51st St, Boulder, CO, United States

    Rocky Mountain Tri-Fest is Colorado's newest Multisport event, catering to the whole family. With events for everyone from mom and dad looking to try their hand at a gravel triathlon, […]

  • San Juan Softie 100

    Durango Nordic Center 49786 Hwy 550 N, Durango, CO, United States

    The softest 100 miler in the San Juans This 100 mile ultra marathon starts and finishes just north of Durango, Colorado. The race will take you through some of the […]

  • Mt Sneffels Half Marathon

    Ouray Ouray, CO, United States

    The Mt. Sneffels Half-Marathon and Kids Fun Run began 25 years ago. In 2021, the 10 K was added. The Race is the foundation’s major fundraising event of the year.  It […]

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