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  • Two22 Run

    Colorado Brewery Running Series
    Two22 Brew 4550 South Reservoir Road, #Suite 1300, Aurora, CO, United States

    Join us for The Two22 Brew Run, and great, local craft beer at Two22 Brew in Aurora on February 22, 2026 Join us for The Two22 Brew Run on February […]

  • Red Hot Ultra

    Gemini Bridges Trailhead at Gemini Bridges, Moab, UT, United States

    The Red Hot is located northwest of Moab, Utah just west of Arches National Park. Red Hot runners will have majestic views of the La Sal Mountains to the southeast […]

  • Time to Paddy Race

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

    Join us for the annual Time to Paddy 5k/10k and Lucky 13.1 Half Marathon! A St. Patrick-themed run that is perfect for the whole family. The fun includes great swag […]

  • PPRR Winter Series IV

    PPRR Winter Series
    America the Beautiful Park Cimino Dr, Colorado Springs, CO, United States

    The series consists of four progressively longer (LONG AND SHORT) races. Please note: You must choose your distance when registering. The Long Race starts at 10:00AM. Short Race starts at 10:20AM. The […]

  • Uncle Clyde’s Run & Slide

    Purgatory Resort 1 Skier Place, Durango, CO, United States

    Get ready for the wackiest race ever in Durango! It’s on the tubing hill. Run up… tube down. Repeat! Most laps wins! Oh, and it’s a relay race!

  • Cupid’s Undie Run

    Stoney's Bar & Grill 1111 Lincoln Street, Denver, CO, United States

    THE PANTLESS PARTY WITH A PURPOSE! Run a ‘Mile(ish)' in Your Undies, Because Kicking NF's Butt is Worth the Chilly Cheeks Every February, thousands of undie runners in cities across […]

    $40.00

  • That DAM Run Half Marathon

    Featured RunDenver Race Series
    Cherry Creek High School 9300 E Union Ave, Greenwood Village, CO, United States

    The RunDenver Series is the original running series in Colorado and has been a staple for over three decades. Produced by HAL Sports, the series promises a fun time through […]

    $30 – $75

  • Polar Plunge 5K

    Washington Park - Denver 701 S Franklin St, Denver, CO, United States

    Are you ready for the COOLEST event of the season! Whether you're a daring plunger, a speedy 5K runner/walker, or a thrill-seeker ready to do BOTH, the Polar Plunge & […]

  • Time to Paddy Race

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

    Join us for the annual Time to Paddy 5k/10k and Lucky 13.1 Half Marathon! A St. Patrick-themed run that is perfect for the whole family. The fun includes great swag […]

  • Tortoise & Hare 10K

    Tortiose & Hare Race Series
    Lee Martinez Park Fort Collins, CO, United States

    The Tortoise & Hare (T&H) is a low-key “handicap” series of seven races that are run monthly from October to April, typically on the first or second Sunday of the […]

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