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  • Canceled Redrum Fun Run

    Lincoln Park - Greeley 829 10th Ave, Greeley, CO, United States

    Get ready to lace up your running shoes and unleash your spooky spirit at the Redrum Costume Fun Run 2025! Join hundreds of ghosts, goblins, superheroes, and wacky characters as […]

  • Quick Draw @ McGraw Trail Race

    McGraw Memorial Park 39 Wellington Lake Rd, Bailey, CO, United States

    Come one, come all! And join us in the "Quick Draw @ McGraw" 2 Mile Trail Run, organized and hosted by CRATES Colorado and benefitting McGraw Memorial Park. This challenging […]

  • BOO Run 5K

    Grand Valley Brew Runs
    WestCo Brewing 905 Struthers Ave, Grand Junction, CO, United States

    Costume up and bring your family and friends, we will haunt the town on our 5k route along the river while taking in the beautiful fall colors followed by a […]

  • Spooky Sprint 5K

    Pueblo YMCA 3200 E. Spaulding Ave, Pueblo, CO, United States

    This eerie evening race winds through a chilling course at the YMCA of Pueblo. The thrilling Halloween themed race is perfect for all ages and fitness levels. Recommended for those […]

  • The Stride 5K/10K

    Featured
    Littleton Museum 6028 S. Gallup St., Littleton, CO, United States

    You’re invited to The Stride, a family-friendly 5K, 10K, Kids Fun Run, and Wellness Expo in Littleton on October 24th. Benefitting the Littleton Public Schools Foundation, this event brings together the community for a great cause. 

    $17 – $46

  • Odyssey Odyssey 5K

    Great Lawn Park 101 Yosemite St, Denver, CO, United States

    The Odyssey Odyssey Fun Run is entering its 9th year. It has always been centered around having fun and exercising our bodies.  It is an all-inclusive event, which is why […]

  • EAPL Zombie Run 5K

    Buchanan Park Recreation Center 32003 Ellingwood Trail, Evergreen, CO, United States

    EAPL's Zombie fun run 5K is on Sunday, October 26th at 10am! Run, walk, crawl family event supporting the Evergreen Animal Protective League (EAPL). Bring your family (doggies are welcome)! […]

    $30

  • MonsterDASH

    Louisville Community Park 955 Bella Vista Dr, Louisville, CO, United States

    Colorado's Longest running Halloween race....since 2006, we have changed the THEME to this race year after year! This 2025 Theme is:  Scary Clowns & Circus We wil have scary music […]

    $35.00

  • Veterans Services Freedom 5K

    Roudebush Cottage 1815 8th Ave, Greeley, CO, United States

    This year UNC Veterans Services is hosting the UNC Freedom 5k. The run is a 3.1-mile route of obstacle-free running that is open to walkers, runners, ruckers, children, strollers, and […]

  • Colorado 24 Hour Run

    Colorado Youth Outdoors 4927 County Rd 36, Fort Collins, CO, United States

    Welcome to the Colorado 24 Hour Run! We aim to provide a fun, welcoming race experience that allows everyone to find a challenge, no matter where you’re at on your […]

    $90 – $200

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