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  • 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! We wil have scary music and a CIRCUS Themes Expo at the start/finish. […]

    $35.00

  • Narrowleaf Lake Run

    Boyd Lake State Park 3720 N Co Rd 11C, Loveland, CO, United States

    Brisk autumn running in Colorado – OH YEA! Join us for a family fun event with three distance options at the beautiful Boyd Lake State Park venue. What’s a “Narrowleaf” […]

  • Spooky Sprint Half Marathon

    Goose Gossege Park 3950 Mark Dabling Blvd, Colorado Springs, CO, United States

    Join us for the annual Spooky Sprint 5k/10k & Half Marathon! A fun, Halloween-themed event that is perfect for the whole family.

  • 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

  • Foundry Halloween 5K

    Steamboat Springs Running Series
    Soda Creek Elementary School 220 Park Avenue, Steamboat Springs, CO, United States

    A relatively new event to close out the Steamboat Springs Running Series season, bringing people of all ages together to celebrate Halloween in a safe, sober and fun way. The […]

  • I Ain’t Scared (of 5K)

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

    Dress up and run spooky and silly at the I Ain't Scared (of 5k) in Thornton! Fun music, Halloween snacks and costumes galore!! This event only comes around once every […]

  • Halloween Peach 5K

    Cedar Mesa Clubhouse 15637 Peach Rd, Cedaredge, CO, United States

    The ladies of Cedar Mesa Club are hosting their 2nd annual peach-filled event to raise money for local scholarships. Come join your neighbors for a scenic 5K (3.1 mile) loop […]

  • Rim Rock Marathon

    Colorado National Monument 2328 Monument Road, Grand Junction, CO, United States

    Join the Grand Junction Sports Commission for a monumental run on Sunday, November 5th, 2023! Rim Rock is the only marathon and half marathon that runs through the Colorado National […]

  • All-Out Kooky-Spooky

    NAAC Stadium 19500 W 64th Pkwy, Golden, CO, United States

    From the base of Table Mountain and Colorado's spectacular foothills, All-Out Multicourse presents Kooky-Spooky from Jefferson County's NAAC Stadium… easily accessible from several nearby highways. Along with its Endless Series sidekick […]

  • Kessel Run Ultra

    North Fruita Desert Trailhead 18 Road Trailhead, Fruita, CO, United States

    Located in Fruita, Colorado, just a quick drive from the Front Range, this is the ultimate Racecation Adventure!!  Enjoy sweeping views of the San Juan Mountains and the Colorado National […]

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