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

Events Search and Views Navigation

Event Views Navigation

Filters

Changing any of the form inputs will cause the list of events to refresh with the filtered results.

Today

  • Colorado Springs Marathon

    Featured
    Pioneers Museum 215 South Tejon Street, Colorado Springs, CO, United States

    Join us for the 13th Annual Colorado Springs Marathon on Saturday, October 3, 2026! Whether you're a seasoned runner or taking on your first 5K, we have four exciting race options to choose from. Each course highlights the stunning beauty of Colorado Springs—winding past historic landmarks, through scenic parks, and finishing downtown at the Colorado […]

    $8

  • 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 through the farms and ranches at the base of the iconic Needle Rock. Soon thereafter, the trail enters the Gunnison National Forest and begins climbing […]

    $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 from the liveBIG 5K to the Ultra Marathon 50K. If you’ve run this trail system before, you know these are some beautiful and beguiling trails. […]

  • 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 races feature the exhilarating opportunity to run across America’s highest suspension bridge, the iconic Royal Gorge Bridge, with breathtaking views of one of Colorado’s most […]

  • Sage Burner Trail Race

    Hartman Rocks Recreation Area Gunnison, CO, United States

    Nestled in the Rocky Mountains, about 2 hours east of Grand Junction and 3 hours west of Denver, lies a small running jewel called Gunnison, Colorado. Visit Gunnison, and you’ll be treated to some of the best outdoor recreation this planet has to offer.

  • HRCA Wildcat Mountain Trail Races

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

    The Wildcat Mountain trail races take place starting at the Douglas County East/West trailhead at Rocky Heights Middle School and run along the E/W trail to the beautiful HRCA Backcountry Wilderness Area Wildcat Mountain trail system. 10 Mile and 10K

  • 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 calculated using an algorithm developed by Bob Royse, and it's geared to favor a beginning runner and the slower runners. Click here for an explanation of the […]

  • Spooky Sprint Half Marathon

    Chatfield State Park 11500 N Roxborough Park Road, Littleton, 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.

  • Run Crazy Horse Marathon

    Crazy Horse Memorial Ave of the Chiefs, Crazy Horse, SD, United States

    The Run Crazy Horse Marathon events begin in the shadow of the world's largest mountain carving,  Crazy Horse Memorial, and finishes in the heart of the Black Hills... Hill City, South Dakota

    • Please click here to submit your event for FREE to our online calendar.
    We do not allow events without physical locations (IE – virtual runs, runs with locations TBD, etc…).
    Please allow 48 hours after submission for an event to appear on the calendar. If you have already listed your event and would like us to update it, please contact us.

    Views: 19