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  • Arches Marathon

    Behind the Rocks Trailhead Moab, UT, United States

    Started in 2004 as a fall companion to the popular Canyonlands Half Marathon, Arches Half Marathon has hosted many runners on the road course. In 2021, Arches became a trail […]

  • Above the Clouds Ultra

    Woodland Park Middle School 600 E Kelley's Rd, Woodland Park, CO, United States

    Experience the amazing Colorado fall colors, fast and flowing singletrack of Rampart Reservoir and the spectacular sweeping views of America’s Mountain, Pikes Peak, in the inaugural Above the Clouds Ultra!

  • West Elk Trail Marathon

    Crawford State Park - Iron Creek Campground 40468 CO-92, Crawford, CO, United States

    The West Elk Challenge is a trail marathon during the peak of fall colors. Racers will start on the shores of Crawford Reservoir State Park and travel on gravel roads […]

    $85

  • Castle Rock Trail Festival

    Phillip S. Miller Park 1375 West Plum Creek Pkwy, Castle Rock, CO, United States

    Welcome to the Town of Castle Rock’s epic trail event. Come to challenge yourself on the vast ridgeline trail system and enjoy Castle Rock’s local trails. Trail run options range […]

  • Rim to Rim Royal Gorge Run

    Royal Gorge Bridge and Park 4218 Co Rd 3A, Cañon City, CO, United States

    Get ready for a ROYALly GORGEous experience! Whether you’re tackling the 5K, the 8-mile trail run, or the half marathon trail run, this event offers something truly special. All three […]

  • Not So Flatt Breast Cancer Awareness Run

    Standley Lake 10200 W 100th Ave, Westminster, CO, United States

    Join us for the Not So Flatt Breast Cancer Awareness Walk and Run.  In 2021, my father lost his fight against breast cancer so we have put together an annual […]

  • Big Waves 5K

    Lifetime Fitness - Westminster 397 W 148th Ave, Westminster, CO, United States

    Hi Friends of Big Waves! We are looking forward to having everyone back for our family 5k this year! We are going to do a superhero theme, so come dressed […]

  • Cart to Cart Trail Run

    Camp 4 Coffee 4th st and Elk Ave, Crested Butte, CO, United States

    10 or 19 mile trail runs at the height of fall colors in Crested Butte.  Fun prizes to winners and random participants. https://www.cbmountainrunners.org

    $75

  • Mines Homecoming 5K

    Colorado School of Mines 1500 Illinois St, Golden, CO, United States

  • I Can 5K

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

    You CAN 5k. This event is for EVERY ONE. EVERY BODY. You won't get lost. You won't get forgotten. You'll run a clearly marked 5k loop with multiple portojohns & […]

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