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    Colorado race calendar

    24 races match

    10K

    Spirit Challenge Run for Autism 10k and 5k

    Sat, May 16, 2026
    Steamboat Springs, Colorado
    road
    Rolling
    65PR40value45vibe
    Register
    Half Marathon

    Vallecito Lake Heavy Half

    Sat, May 16, 2026
    Bayfield, Colorado
    road
    Rolling
    60PR40value55vibe
    scenic
    Register
    10K

    Endure Trail Runs

    Sat, May 16, 2026
    Divide, Colorado
    road
    Rolling
    65PR40value45vibe
    Register
    5K

    Miles for Smiles 5K

    Sun, May 17, 2026
    Arvada, Colorado
    road
    Rolling
    65PR40value45vibe
    Register
    Marathon

    Girls on the Run Rockies Colfax SoleMates 2026

    Sun, May 17, 2026
    Denver, Colorado
    road
    Rolling
    60PR40value45vibe
    Register
    5K

    Run for Mental Health 5K/10K/13.1 DENVER/AURORA

    Sat, May 23, 2026
    Centennial, Colorado
    road
    Rolling
    65PR40value45vibe
    Register
    5K

    Memorial Day Run 5K/10K/13.1 DENVER/AURORA

    Sat, May 23, 2026
    Centennial, Colorado
    road
    Rolling
    65PR50value75vibe
    festive
    charity
    Register
    Marathon

    Farish Trail Race

    Sat, May 23, 2026
    Woodland Park, Colorado
    trail
    Rolling
    30PR40value45vibe
    Register
    Marathon

    2026 CKF Cape Town Marathon

    Sun, May 24, 2026
    Aspen, Colorado
    road
    Rolling
    60PR50value65vibe
    charity
    Register
    Other

    The Narrow Gauge Races

    Sun, May 24, 2026
    Durango, Colorado
    road
    Rolling
    60PR50value80vibe
    scenic
    festive
    charity
    Register
    10K

    BOLDER BOULDER 10K

    Mon, May 25, 2026
    Boulder, Colorado
    45K runners
    road
    Rolling
    70PR50value85vibe
    music
    festive
    charity
    Register
    5K

    8th Annual Angel Run at Red Leg Brewing

    Mon, May 25, 2026
    Colorado Springs, Colorado
    road
    Rolling
    65PR50value75vibe
    festive
    charity
    Register
    Other

    Session Series #1 - Floyd Hill

    Wed, May 27, 2026
    Evergreen, Colorado
    road
    Rolling
    60PR40value30vibe
    Register
    5K

    2026 MTHCF 5K

    Sat, May 30, 2026
    Fruita, Colorado
    road
    Rolling
    65PR40value55vibe
    costume
    Register
    Ultra

    Weld Your Mettle Running Festival

    Sat, May 30, 2026
    Eaton, Colorado
    road
    Rolling
    60PR40value45vibe
    Register
    Other

    Session Series #2 - Maryland Mountain

    Wed, Jun 3, 2026
    Black Hawk, Colorado
    road
    Rolling
    60PR40value50vibe
    scenic
    Register
    5K

    StepUp For Women And Recovery

    Sat, Jun 6, 2026
    Fort Collins, Colorado
    road
    Rolling
    65PR40value45vibe
    Register
    5K

    Aiden's Adventure 5k

    Sat, Jun 6, 2026
    Colorado Springs, Colorado
    road
    Rolling
    65PR40value45vibe
    Register
    1 Mile

    J-Town Jog 5K and Jr 1 Mile Dash

    Sat, Jun 6, 2026
    Johnstown, Colorado
    road
    Rolling
    65PR40value55vibe
    music
    Register
    Other

    Summits Trail Runs

    Sat, Jun 6, 2026
    Granby, Colorado
    road
    Rolling
    60PR40value50vibe
    scenic
    Register
    Other

    The Valley Bottom Rio Trio

    Sat, Jun 6, 2026
    Alamosa, Colorado
    road
    Rolling
    60PR40value40vibe
    Register
    5K

    SuperHeroes Run 5K/10K/13.1 DENVER/AURORA

    Sat, Jun 6, 2026
    Centennial, Colorado
    road
    Rolling
    65PR40value45vibe
    Register
    Marathon

    Steamworks Half Marathon

    Sat, Jun 6, 2026
    Durango, Colorado
    road
    Rolling
    60PR40value55vibe
    scenic
    Register
    Other

    Creede Donkey Dash

    Sat, Jun 6, 2026
    Creede, Colorado
    road
    Rolling
    60PR40value40vibe
    Register
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