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

  • Fish Hatchery 5K

    Leadville National Fish Hatchery 2846 Hwy 300, Leadville, CO, United States

    Located at the historic Leadville National Fish Hatchery, the Fish Hatchery 5K features a scenic cross country style course that winds through subalpine forest near and around the Evergreen Lakes and lower Rock Creek area. The route consists of dirt road, path and trail.

  • Tails on the Trail 5K

    Salida Steamplant Sacket and G Streets, Salida, CO, United States

    The Tails on the Trail 5K is a family and dog-friendly 5k race with proceeds benefiting the life-saving work of Ark-Valley Humane Society. Race this with or without your dog on May 22nd at Loyal Duke's Dog Park in Salida.

  • Best Buddies Friendship Walk

    Basalt Middle School 51 School St., Basalt, CO, United States

    The Best Buddies Friendship Walk is the leading event in the country supporting inclusion for people with intellectual and developmental disabilities (IDD). Join 50,000 participants at 70+ Walks across the globe to support the Best Buddies programs in schools, workplaces, and communities. You’ll be making the world more welcoming to people with IDD — one […]

  • Summit Trail Running Series I

    Summit County Allocation Park 639 Landfill Road, Dillon, CO, United States

    Explore the trails of Breckenridge this summer with the 23rd annual Summit Trail Running Series with each race followed by a post-race party! The Series consists of 5 trail races in and around Summit County, May-July. Each race features a short and long course, and all races are open to runners of all abilities ages […]

  • The Big Run 5K

    Fleet Feet - Colorado Springs 3659 Austin Bluffs Parkway, Colorado Springs, CO, United States

    Celebrate what makes running fun — high-fives, endorphins, good friends. Come hang with Fleet Feet on Global Running Day, run a breezy 3.1 miles and make The Big Run an epic party.

  • First Fridays 5K

    First Fridays 5K
    Festival Park 199 Perry St., Castle Rock, CO, United States

    Friday nights in the summer are made for spending time close to home, enjoying the beautiful weather, and unwinding from the long week. Why go anywhere else but Downtown Castle Rock? Start the night off on the right foot with the First Fridays 5K. Before enjoying the free concert event, get a workout with the […]

  • Summits Trail Runs

    Granby Ranch 1000 Village Rd, Granby, CO, United States

    The Summits Trail Runs occur at Granby Ranch Resort in Colorado’s beautiful Rocky Mountains. These challenging trail races offer a variety of distances ranging from shorter runs to ultra distances, each course showcasing sweeping mountain vistas, dense forests, and rugged alpine terrain. Runners experience varying elevation gains that test endurance as the routes twist through […]

  • Great Divide Ultra

    Mueller State Park 21045 State Highway 67, Divide, CO, United States

    Experience the spring-fed meadows, massive rocks of Pikes Peak granite, and sweeping views of Colorado’s most spectacular mountains in the Great Divide Ultras. This Colorado early season 100m, 100k, 50k and 25k trail ultra takes place entirely on the beautiful rolling meadows of Mueller State Park. The beautiful looped course is 100% smooth single/double-track trail. […]

  • Basalt Half Marathon

    Basalt Middle School 51 School St., Basalt, CO, United States

    The Basalt Half Marathon is a fast gradual downhill race on a scenic 2 lane road along the Frying pan river. This race is a fundraiser for the Basalt High school cross country team and has been going since 1976. Runners will be bused to the start line and run to the finish line at […]

  • Colorado Triathlon

    Boulder Reservoir 5565 N 51st St, Boulder, CO, United States

    The Colorado Triathlon is where Colorado comes to race! The Colorado Triathlon - sprint & olympic distances, duathlon & aquabike options . To make this the "can't miss" event of the season, we'll also have athlete hoodie sweat shirts, and the best swag bag of the season. For us this race is about one person, […]

    $85 – $145
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