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

  • CSU Homecoming 5K

    CSU Oval Fort Collins, CO, United States

    The Homecoming Race will take place on the Oval for our traditional course. All ages and abilities are welcome. Proceeds from the Homecoming Race benefit the ongoing research efforts and outreach engagements offered by the Department of Health and Exercise Science. HES is committed to a life-altering education for every one of our 1,400 undergraduate […]

  • Great Trailhead Foot Race

    Bear Creek Lake Park 15600 W Morrison Rd, Lakewood, CO, United States

    Don't miss the Great Trailhead Foot Race at Bear Creek Lake Park!  Featuring legitimate TRAILS in the shadow of Denver's skyline, you'll love the single-track and dirt as you race 5 miles, or a double lap of TEN miles to the finish line party!  Bring your ID because there's FREE BEER for 21 and up […]

  • Crazy Cloverleaf

    Chatfield State Park 11500 N Roxborough Park Road, Littleton, CO, United States

    We host one race per month from November to March.  All races are at Chatfield State Park and start at 9:00 am on Saturday mornings.  Check-in starts at 8:15 am.

  • Run Fur Fun Spooktacular 5K

    Odell Brewing Company 800 East Lincoln Avenue, Fort Collins, CO, United States

    Our Run Fur Fun 5k starts and ends at Odell Brewing Company in Fort Collins. Don't forget to wear a costume for the costume contest, enjoy the eclectic tunes of The Sugar Britches, and have lots of fun with fellow animal-and beer-loving racers. Members of NOCO Clown Club will be there making balloon animals for the youngsters […]

  • South Suburban Race Series

    Hoofin’ It Through the Hollows 5K

    deKoevend Park 6315 S. University Blvd., Centennial, CO, United States

    Runners of all ages and abilities, families, and dogs are all welcome to join us for this Halloween celebration!  Dress in your Halloween best for a chance to win prizes at the pre-race the costume contest before the race at 5 pm.

  • Expo Park XC Runs

    Expo Park 10955 E Exposition Ave, Aurora, CO, United States

    Old-school cross-country style courses with creek crossings and bale jumps. Youth races 1k - 4k. All-ages 5k. Individuals and teams.

    $20
  • IACP Denver Police 5K

    Civic Center Park 101 14th Avenue, Denver, CO, United States

    The 5K Fun Run, hosted in partnership with Lexipol and Axon, will take place in the heart of downtown Denver’s Civic Center Park. This signature event invites public safety professionals, supporters, and community members to start their day with purpose, connection, and movement. Participants will enjoy a scenic route through Denver’s civic and cultural core—surrounded […]

  • IACP 5K Fun Run

    City Park - Denver 1700 N York St, Denver, CO, United States

    Lace up and join us for the IACP 5K Fun Run at the 2025 International Association of Chiefs of Police Conference in Denver! This lighthearted, non-competitive run is your chance to kick off the day with fresh air, great views, and even better company. Whether you’re a seasoned runner or just in it for the […]

  • Crimson Classic 5K

    University of Denver - Carnegie Green Lawn 2150 East Evans Ave, Denver, CO, United States

    The University of Denver's Annual Crimson Classic 5K Run/1.5 Mile Walk will take place on Carnegie Green Lawn. Music, stretching, and snacks will start at 2:15pm. The focus of the Crimson Classic is to celebrate wellness and to bring together our community. This is a free event! Please join us for a selection of wellness […]

  • Canyonlands Ultra

    Behind the Rocks Trailhead Moab, UT, United States

    Canyonlands 100K, 50 Mile, 50K, Marathon, Half Marathon, and 15K Canyonlands Ultra starts and finishes at the Behind the Rocks Trail, along the border of the Behind the Rocks Wilderness Study Area. Moab's last hidden gem; its tall standing Navajo Sandstone domes and fins can be seen from many places along the course. From smooth double […]

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