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  • Reece’s Roundup 5K/10K

    Phillip S. Miller Park 1375 West Plum Creek Pkwy, Castle Rock, CO, United States

    Join the Rubino Family at Philip S Miller Park in Castle Rock for the Annual Reece’s Roundup 5K/10K. This event supports Reece Rubino in his fight against Spinal Muscular Atrophy.

    $40

  • 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 […]

  • Arapahoe Warrior 5K

    Featured
    Arapahoe High School 2201 E. Dry Creek Rd, Centennial, CO, United States

    Come out and support the Arapahoe Warrior Cross Country team at the 3rd annual Arapahoe Warrior 5K. $10.00 of every registration goes directly back to the Arapahoe Cross Country Booster […]

  • Dog Days of Summer 5K

    Dawson Park 1899 Harvard St, Longmont, CO, United States

    Come join us for a race around the entirety of beautiful Lake McIntosh! This 3.5 mile race is a half paved/half dirt course surrounded by wonderful mountain views, vast farmlands, […]

  • 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, […]

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