Event details subject to change. Please confirm all information via event website.

  • 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. Hired Clowns on site and a circus atmosphere with Games, Hot Dogs, Pop Corn and Drinks. Stay for the Party and have a fun time. […]

    $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” you ask? The Narrowleaf Cottonwood Trees are the most densely populated tree species at Boyd Lake State park. We thought the name was fitting and […]

  • 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 running journey. Want to see how far you can go in 6, 12 or 24 hours? Or achieve a new furthest distance? What about setting […]

    $90 – $200
  • Foundry Halloween 5K

    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 Foundry Treatment Center provides an opportunity for lasting recovery through an integrative body, mind and spirit treatment program. Comfortably located in the majestic Rocky Mountains […]

  • 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 few years when Halloween lands on a weekend. You don't want to miss it! Every racer gets a T-shirt with GLOW IN THE DARK printing […]

  • 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 Monument in beautiful Fruita, Colorado. The race course gives runners amazing views of the Grand Valley and finishes at the Fruita Community Center.

  • 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 in March, Spring Fever, these 5K, 10K & Half Marathon courses will hug the shores of Arvada's Blunn Reservoir via the Ralston Creek Trail and will […]

  • 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 Monument as you run through the high desert. All distances begin on fast, flowing singletrack and work their way back to the steep ups and downs […]

  • 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 Saturday or Sunday (same course, same support, but two separate awards.) If you want to run the Marathon, 10K or Kids K- they will be […]

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