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  • Flyin’ Lion 5K

    Littleton High School 199 E Littleton Blvd, Littleton, CO, United States

    The Flyin' Lion 5K returns this year to raise money to support Littleton High School’s Lions Sports Booster Club, a non-profit 501c3 made up of parent volunteers and school administrators. The race will take place at Littleton High School on October 2nd, 2022.

  • Rebel Run 5K

    Stapleton Central Park 8801 Martin Luther King Jr Blvd, Denver, CO, United States

    Join Conservation Colorado for the first-ever Rebel Run 5k! Run, walk or stroll to show your passion for Colorado's climate, air, land, water and communities. Create or join a team, […]

  • Honey Bee Hustle

    Fairgrounds Park 700 S Railroad Ave, Loveland, CO, United States

    Are you ready to challenge yourself? We will have a 1-mile loop open for 1 ½ hrs. Who can run the most loops in 1 ½ hrs? Who can run […]

  • Snow Mountain Ranch Trail Festival

    YMCA of the Rockies - Snow Mountain Ranch 1101 County Rd #53, Granby, CO, United States

    Join us at the YMCA of the Rockies in Granby for the 12th annual Snow Mountain Ranch Trail Running Festival. This event features 4 races with 2 different "challenges".  Races […]

  • All-Out Fallfest

    Church Ranch Office Park 10170 Church Ranch Wy, Westminster, CO, United States

    One of Colorado's favorite trails meets one of its most glorious parks at our 9th annual Fallfest 5K, 10K and half marathon! As the courses wind southwest along Big Dry […]

  • Ned*Ned Half Marathon

    TEENS Inc. 151 East Street, Nederland, CO, United States

    Embark on your journey by winding through Old Town Nederland, the epitome of Colorado mountain towns. The Half Marathon, 10K and 5K will take you on dirt roads and single […]

  • Team Hope 5K

    Stapleton Central Park 8801 Martin Luther King Jr Blvd, Denver, CO, United States

    The Rocky Mountain Chapter of the Huntington’s Disease Society of America (HDSA) will host the the annual Heroes and Villains Team Hope 5K Walk and Run, on Saturday, September 13th […]

  • Parker Recreation Run Series

    So Long to Summer 5K/10K

    Salisbury Park 11920 N Motsenbocker Rd, Parker, CO, United States

    Part of the Parker Parks and Recreation Run Series, this event is professionally timed. Registered participants will receive a race shirt, custom bib and a delicious post-race pancake breakfast. The […]

  • Evergreen Trail Race Series

    Bergen Peak Half Marathon

    Buchanan Park Recreation Center 32003 Ellingwood Trail, Evergreen, CO, United States

    This race is epic! Bergen Peak runners will endure the rolling hills of Elk Meadow and the strenuous switchbacks of Bergen Peak and Too Long Trail. While ascending approximately 1,500 […]

  • Trail Sisters Half Marathon

    Whitewater Park 913 E Main St, Buena Vista, CO, United States

    Come run a Half Marathon or our new 10k that twist and turn through sage brush and ponderosa pines, all while providing stunning views of the Collegiate Peaks. Located in […]

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