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

  • The Denver 5K

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

    THE Denver 5k! Denver's Iconic Sloan Lake is the setting for the return of 'THE Denver 5k'. Celebrate with friends and family as you race around the lake in the shadow of Denver's skyline. Group pricing applies; youth and senior pricing are offered as well! Held at the start of September, THE Denver 5k is […]

  • Splashland Triathlon

    Splashland Swimming pool 5895 CO. Hwy 17, Alamosa, CO, United States

    Catch a glimpse of the Great Sand Dunes National Park with six 14’nrs in the background Mt. Blanca, Colorado’s 3rd highest peak overlooks the valley floor.

  • Historic Main Street 5K

    Elizabeth Brewing Company 239 South Main Street, Elizabeth, CO, United States

    Join us for this family-friendly event! The 5K run/walk will begin and end on Elizabeth’s historic Main Street, featuring a new and exciting course that crosses the reconstructed trail bridge and heads north into Evans Park, with a mix of pavement and dirt for varied terrain. The Family Color Run will take place in Running […]

  • Break Your Neck 5K

    CSU Pueblo 2200 Bonforte Blvd, Pueblo, CO, United States

    Come join us to celebrate the access/disability community and raise money for spinal cord injury rehabilitation and awareness. My name is Kenny White III. On November 15 of last year, I suffered a Burst fracture to my C6 vertebrae. After emergency surgery I woke up a quadriplegic. After months of rehabilitation and hard work, by […]

  • Jungle Dash

    Chapungu Sculpture Park 5971 Sky Pond Dr., Loveland, CO, United States

    Come join us for a 1-mile fun run, as we kick off the Wild Wonderful Saturday events. Plan to stay and check out the Wild Zone. Welcome adventurers, explorers, and vine-swinging daredevils! You are invited to join us for a ROARING good time! This is going to be the WILDEST Jungle Dash of the year! […]

  • Colorado Brewery Running Series

    Waldschänke Ciders 5K

    Waldschänke Ciders + Coffee 4100 Jason Street, Denver, CO, United States

    Join us for the Waldschänke Ciders 5k on September 13, 2025, for a 5k-ish, fun run event that starts and ends at this awesome cidery in Denver. Run, walk, jog - whatever goes! Complete the course and celebrate with us and a FREE, local craft cider at the finish line. Start windows will be available […]

  • Greenland Pack Burro Race

    Greenland Open Space 1532 E Noe Rd, Larkspur, CO, United States

    Welcome to the annual Greenland Open Space Pack Burro Races presented by Double Rainbow Ranch! Grab your burro and join us for a fun and rewarding day on the majestic Greenland Open Space Trail in beautiful Larkspur, Colorado. RACE RULES Each entrant will pay a fee as determined by the Race Director for each race. […]

  • Demon Dash 5K

    NAAC Stadium 19500 W 64th Pkwy, Golden, CO, United States

    Lace up your shoes and join us for the Demon Dash at its new course at the NAAC! We're excited to bring this course its new home and onto dirt! Whether you are a runner or walker, this will be a fun community event for all. This year's race will follow the high school races […]

  • Flying Falcon Downhill Mile

    Air Force Academy Falcon Stadium Air Force Academy, Colorado Springs, CO, United States

    Looking to run the fastest mile you possibly can? Dropping 220 feet, the Flying Falcon Downhill Mile will allow you to run the absolute fastest mile possible. Taking place on the beautiful campus of the US Air Force Academy, the race will start at the top of Academy Dr. near Doolittle Hall and will finish […]

  • Oktoberfest 5K Trail Run

    Riverwalk Center 150 W Adams Ave, Breckenridge, CO, United States

    The Oktoberfest 5K returns this fall on Saturday, September 13th, offering an active start to a festive weekend. Lace up your running shoes and experience the changing aspens and beautiful scenery in this 5K trail run on Town of Breckenridge Trails, finishing right in Blue River Plaza on Main Street in time to enjoy the […]

  • 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.