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

  • Escape Trail Run 5K

    Camp Jackson 9126 Hwy 165, Rye, CO, United States

    Escape to YMCA Camp Jackson for a 5K run/hike, filled with twists, turns and over 1,000 feet in elevation gain! Bring your friends and family along to get the ultimate tour of Camp Jackson. The 5K run/hike will start at 8am. Weather in the mountains can be unpredictable so bring water, sunscreen, extra clothing, and […]

  • Escalante Days 5K

    Flanders Park 420 Central Ave, Dolores, CO, United States

    All proceeds support the Dolores Middle and High School Cross Country programs.

  • Just Peachy 5K

    Palisade Riverbend Park 451 Pendleton St., Palisade, CO, United States

    Join the Grand Junction Sports Commission for the Just Peachy 5K presented by Grand Valley Primary Care Palisade (Community Hospital) on Saturday, August 19th.  This fun 5K is great for families and beginners, but also a very fast course for those looking to PR.

  • Dog Days of Summer 5K

    Dawson Park 1899 Harvard St, Longmont, CO, United States

    Come join us for a race around the entirety of beautiful Lake McIntosh! This 3.5 mile race is a half paved/half dirt course surrounded by wonderful mountain views, vast farmlands, and beautiful aquatic wildlife! Gather at Dawson Neighborhood park near the pirate ship playground where you will find an assortment of vendors, music, games, and […]

  • Strides For Change

    Sloan's Lake Park 1700 Utica Street, Denver, CO, United States

    Join us on August 9th, 2025 at Sloan’s Lake for Strides for Change – a 5K for Youth Mental Health, presented by Resolute Counseling Center. This community-centered event is more than a race — it’s a movement to support and uplift the mental health of our youth. Hosted by Resolute Counseling Center, whose mission is to remove […]

  • Severance Glow 5K

    Severance Community Park 100 Waterfowl Way, Severance, CO, United States

    Welcome to Severance's first Severance Days 5k presented by Severance Middle School the Town of Severance with proceeds benefitting Severance Middle School. Held at the Severance Community Park. Severance Days 5K looks to tie the bow on an amazing weekend for an amazing community. Additional donations will go to Yellow Ribbon, a non-profit, for suicide […]

  • Cheesman Park Circuit

    Cheesman Park 1601 Race St., Denver, CO, United States

    Denver Athletics brings you the Denver Park Circuit Series- Three races at Denver's iconic city parks with the same format: One Lap As Fast As You Can Go!  Spring- The City Park Circuit Summer- The Cheesman Park Circuit Fall- The Wash Park Circuit Become a Denver Athletics Road Racing Member ($100) or Full Member ($175) and get free entry […]

  • Leadville Trail 10K

    Leadville 124 E. Sixth Street, Leadville, CO, United States

    This out-and-back course uses the first and last 3.1 miles of the LT100 Run course, featuring paved and dirt roads. Held the weekend of the historic Leadville Trail 100 MTB, the Climax Molybdenum Leadville 10K Run is the shortest run in the series, but covers the first and last 3.1 miles of the infamous Leadville […]

  • Summit Trail Running Series

    Summit Trail Running Series V

    Carter Park 500 South High Street, Breckenridge, 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 […]

  • Eldorado Springs Run for the Cure

    Eldorado Canyon State Park 294 Artesian Drive, Eldorado Springs, CO, United States

    The Colorado Cancer Foundation returns to Eldorado Springs for its Classic 44th edition of the Eldorado Springs Run for the Cure 4 Mile on August 10th.

    $30
  • 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.