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  • Thumbs Up Summer Slam

    Thumb Open Space 101 Peak View Drive, Estes Park, CO, United States

    Repeating 2km out-and-back laps on the Thumb Open Space trail, 540ft of vertical gain each. Start at 7:10am, finish at 7:10pm. Sunup to sundown. Collect a poker chip at the […]

  • Heritage Eagles 5K

    Heritage High School 1401 W Geddes Ave, Littleton, CO, United States

    Support the Heritage Eagles cross country team at the annual Heritage Eagles 5K. Last year's race, raised over $3,500 for the Heritage Eagles xc team; $ 10.00 of every registration […]

  • 10K and 5K @10,000 Feet

    Featured Vail Trail Running Series
    Vail Village 292 E Meadow Dr, Vail, CO, United States

    Vail Mountain's Views Won't be the Only Thing Taking Your Breath Away! The 10@10 returns to its original route on Grand Traverse. The race starts 10,000 feet above sea level, on the […]

  • Powderhorn Mountain Trail Climb

    Powderhorn Mountain Resort 48338 Powderhorn rd, Mesa, CO, United States

    Beat the heat with the Grand Junction Sports Commission’s Powderhorn Mountain Trail Climb. Trek up the Stagecoach Trail, take in the beauty of the Grand Mesa and Grand Valley. The […]

    $170

  • Great Escape Trail Race

    Centennial Park - Cañon City Cañon City, CO, United States

    The Annual Royal Gorge Whitewater Festival (RGWF) features whitewater competitions and land-based recreation events to celebrate the whitewater season on the Arkansas River. Enjoy summer flows in a fantastic whitewater […]

  • OCA Panda Run 5K

    Auraria Campus 1068 9th Street Park, Denver, CO, United States

    Come join Organization of Chinese Americans' Charity 5K Panda Run or OCA 1K panda walk on Saturday 7/18/2026 at 9 am at MSU - Regency Athletic Complex. Stay after the […]

    $39

  • WeldWerks Brewing 5K

    Colorado Brewery Running Series
    Weldwerks Brewing Co 508 8th Ave., Greeley, CO, United States

    Join us for the WeldWerks Brewing 5k & 10k on July 18, 2026. This fun run event starts and ends at this awesome taproom in Greeley. Run, walk, jog - […]

  • Gastro-Dash 10K

    Roberts Lake Park 1035 N 7th St, Berthoud, CO, United States

    The Berthoud Gastro-Dash 10K is not just a footrace; it’s an epic, hilarious test of both speed and stomach, challenging runners to tackle a 6.2-mile course punctuated by mandatory food […]

  • TransRockies Run

    Leadville 124 E. Sixth Street, Leadville, CO, United States

    The TransRockies Run (Pass to Pub) is a trail running stage race also known as “Summer Camp for Big Kids”! A three stage race traversing the continental divide between Hope […]

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