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  • 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 […]

  • 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 […]

  • PPRR Nielson Challenge

    PPRR Nielson Challenge
    North Monument Valley Park 1794 Culebra Ave., Colorado Springs, CO, United States

    Race Format The first time you run this event, you'll establish a base time for yourself. This base time is used to generate a handicap time. The handicap time is […]

  • Moab Trail Marathon

    Kane Creek Trailhead Moab, UT, United States

    We are happy to announce that we will again be running Sundays 1/2 Marathon in addition to the traditional Saturday Races. So, you may run the 1/2 marathon on either […]

  • HRCA Backcountry Wilderness Half

    Highlands Ranch Race Series
    Rocky Heights Middle School 11033 Monarch Blvd, Highlands Ranch, CO, United States

    2023 marks the 15th Annual Backcountry Wilderness Half Marathon in Highlands Ranch! This 13.1-mile scenic trail run utilizes the Douglas County East/West trail and the beautiful Highlands Ranch Community Association's […]

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