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  • St. Jude Walk/Run

    Auraria Tivoli Quad 1000 Larimer St, Denver, CO, United States

    Event Description: St. Jude Walk/Run is a family friendly 5K event, taking place at Dick’s Sporting Goods Park on September 23rd. Participants come together during Childhood Cancer Awareness Month to […]

    Free

  • Move Forward 5K/10K

    Regis University 3333 Regis Blvd Denver CO, Denver, CO, United States

    The Move Forward 5K/10K is an event created by the Doctor of Physical Therapy students at Regis University as a community outreach project. The proceeds from the event will benefit Canine Companions […]

  • Mountain Marmot Trail Run

    Purgatory Resort 1 Skier Place, Durango, CO, United States

    Have you ever stood at the bottom of a mountain, staring up at the top, thinking to yourself: “I wonder if I could run all the way up there?” Well, […]

  • Miles 4 Madison 5K

    Providence Park 8100 Piney River Avenue, Littleton, CO, United States

    Join us in Sterling Ranch for the Miles 4 Madison 5k/1k fun run. Miles 4 Madison is a 5K/1K fun run sponsored by Sterling Ranch Cab. Miles 4 Madison’s goal […]

    $25

  • Montbello Alive! 5K

    Parkfield Lake Park 15555 E 53rd Ave, Denver, CO, United States

    Join us for the Montbello Alive 5K, a vibrant community event that brings together runners, walkers, and families for a day of fun, wellness, and celebration. This race is part […]

  • Autumn Run Half Marathon

    McPhelemy Park 112 W Lake St, Buena Vista, CO, United States

    The Autumn Run is held each year on the third weekend in September, in and around the historic, friendly, and picturesque town of Buena Vista, Colorado. Nestled in the upper […]

  • Rock Cut Estes Park 5K

    Rock Cut Brewing Company 390 W Riverside Drive, Estes Park, CO, United States

    Join us for The Rock Cut Estes Park 5k on September 20, 2025, for a 5k-ish, fun run event that starts and ends at this awesome taproom in Estes Park. […]

  • RMRR Marathon Training Series

    RMRR Fall Marathon Training Series

    Riverwalk Ballfields 9830 Riverdale Rd, Thornton, CO, United States

    RMRR’s Marathon Training Series provides 10M and 20M races that are low cost, friendly, fully supported, and officially timed.  All you need to do is focus on your running!  Our […]

  • Pikes Peak Marathon

    Memorial Park - Manitou Springs 502 Manitou Ave, Manitou Springs, CO, United States

    The Pikes Peak Marathon, founded in 1956, is the oldest continually held marathon in the United States, taking runners from Manitou Springs, Colorado, to the summit of Pikes Peak at […]

  • Second Wind Fund 5K

    Clement Park 7306 W. Bowles Avenue, Littleton, CO, United States

    It is more important than ever to invest in the mental health of our children and teens, many of whom have undergone significant changes to their daily lives and have […]

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