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

  • The Big Run 5K

    Clement Park 7306 W. Bowles Avenue, Littleton, 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.

  • Vail Ultra

    GoPro Mountain Games
    Vail Village 292 E Meadow Dr, Vail, CO, United States

    Push your limits with the Vail Ultra! This 50-mile adventure takes you through the heart of the Rockies, where every step leads you through steep ascents, awe-inspiring views, and ever-shifting terrain. Whether you’re an experienced runner or just love the challenge of the outdoors, this race is about more than just crossing the finish line. […]

  • BRR Summer Track Series #1

    Potts Field 4001 Discovery Drive, Boulder, CO, United States

    Join the Boulder Road Runners as we host the premier track and field meet series in Colorado! Tradition runs deep with this legacy event. Now in its 4th decade, the meets welcome people of all ages and abilities – youth, masters, elites, and age-groupers alike. Heats are organized by predicted finish time, giving everyone peers to […]

    $10 – $15
  • 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 […]

  • Louise Hammond Memorial Beardance Run

    Towaoc Recreation Center 495 Sunset Blvd, Towaoc, CO, United States

    First 20 to register (in each category) will get a t-shirt. Overall Prizes for M/F - 1st, 2nd and 3rd place 10k and Half Marathon: out-and-back, the first mile is a gradual incline on pavement, then onto an unmaintained dirt road. There will be water stations along the way. 5k: Starts on pavement for the […]

  • PPRR Nielson Challenge

    PPRR Nielson Challenge
    North Monument Valley Park 1794 Culebra Ave., Colorado Springs, CO, United States

    Race Format The first time you run this event, you'll establish a base time for yourself. This base time is used to generate a handicap time. The handicap time is calculated using an algorithm developed by Bob Royse, and it's geared to favor a beginning runner and the slower runners. Click here for an explanation of the […]

  • Footsteps for Families

    Saint Andrew United Methodist Church 9203 S University Blvd, Highlands Ranch, CO, United States

    Get Ready to Run, Walk or Scoot, and Support: Family Fun Event Returns for its 3rd Year! Grab your gear and gather your loved ones – it's time for the 3rd Annual Walk/Run to support Safe Families for Children!  This event is now titled Footsteps for Families.  This year promises to be bigger and better, offering […]

  • Levee Run 5K

    Pillars Park 560 Pearl St, Pueblo, CO, United States

    Make a Difference (MAD) Run and The Downtown Association proudly presents another great community event: The Pueblo Levee Walk/Run 5K. Event Details: Starting Point: Pillar Park Start Time: 8:00 AM Route: Scenic path alongside the Arkansas River Registration Bonus: Free T-Shirt for participants who register at least one week in advance Transportation: Shuttle service available […]

  • 5K In My Shoes

    Envision 1050 37th Street, Evans, CO, United States

    The 5K In My Shoes event will return to Envision (1050 37th Street Evans, CO 80620). Check-in/registration starts at 7:30 AM and the race begins at 8:30 AM. The start and finish line will be at Envision’s office and participants can walk/run/roll on the course through the streets in the neighborhood with a 1K and […]

  • Breckenridge Brewery Half Marathon

    Breckenridge Brewery - Littleton 2920 Brewery Lane, Littleton, CO, United States

    Join us for the Breckenridge Brewery Half Marathon and 5k on Sunday, June 8th, 2025. The course starts and ends at this beautiful Colorado brewery. The out-and-back course along the South Platte trail will offer scenic views of the Front Range while running along the South Platte River. There is also a 5k fun run […]

  • Please click here to submit your event for FREE to our online calendar.
    We do not allow events without physical locations (IE – virtual runs, runs with locations TBD, etc…).
    Please allow 48 hours after submission for an event to appear on the calendar. If you have already listed your event and would like us to update it, please contact us.