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  • Hope House 5K

    Westminster Promenade 10600 Westminster Blvd, Westminster, CO, United States

    Our 13 annual Hope House 5K & Fun Run will take place on Saturday, May 2, 2026 at the Promenade Terrace Park (South of the Westin Westminster)! It will be a fun-filled […]

  • Furry Scurry

    Washington Park - Denver 701 S Franklin St, Denver, CO, United States

    The Furry Scurry is an annual, pet-friendly, fun-filled festival and two-mile dog walk at Denver’s Washington Park to benefit the animals in our care. This year, people can gather in person on Saturday, May […]

  • Walk MS

    Walk MS
    City Park - Denver 2001 Steele St, Denver, CO, United States

    Walk MS includes a powerful new experience where you’ll witness how your support changes the lives of people with MS and gets us closer to our ultimate goal: a cure. […]

  • Colorado Marathon

    Featured
    Washington Park - Fort Collins 301 Maple St, Fort Collins, CO, United States

    Marathon, Half Marathon, 10k, 5k and 3-Person Marathon Relay.  Marathon, Marathon Relay and Half Marathon runners get to run down the scenic, downhill Poudre Canyon to the finish in Old […]

  • Longmont Half and 5K

    Longmont Rec Center 310 Quail Rd., Longmont, CO, United States

    Longmont's only Half Marathon - now offered in the cooler month of MAY! Join the Half Marathon or 5k distance! Walkers and Runners of all abilities welcome!

  • RMRR Central Park 5M/5K

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

    Everyone – slow, fast, or in-between –  can win  at RMRR Trophy Series races.  With our handicap scoring system, we predict YOUR finish time based on recent running results, giving you a great […]

  • Moose Mudder

    Altitude Elementary School 27300 East Southshore Drive, Aurora, CO, United States

    Please join us for the Annual Moose Mudder! This is a community event that will consist of an untimed 1k fun walk/run and a timed 5k followed by an optional […]

  • Emerge 5K

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

    The Emerge 5K is our biggest annual fundraiser, and the funds we raise ensure that we can continue to fulfill our organizational mission of breaking the social and financial barriers […]

  • Grand Mesa Ultras

    Mesa Top Trailhead 25930 Grand Mesa Scenic Byway, Cedaredge, CO, United States

    Come enjoy some of the best mountain running in Western Colorado! Our races are held on the Grand Mesa, the largest flat-topped mountain in the world where the average elevation […]

  • Frank Shorter Track Classic

    Boulder Track Series
    Niwot High School 8989 Niwot Road, Niwot, CO, United States

    The Frank Shorter Track Classic is a track meet honoring one of America's greatest distance athletes. Each year, we will celebrate Frank's career, his devotion to the sport of running and promotion of health and fitness, while also acknowledging a different Boulder Olympian. This year's meet will take place on May 21st at Nevin Platt Middle School in Boulder.

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