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

  • Heart & Sole Half Marathon

    Boulder Reservoir 5565 N 51st St, Boulder, CO, United States

    On Mother's Day, May 12th, 2024 the Heart & Sole Mother's Day Half Marathon, 10K and 5K returns to Boulder County! We will have so many amazing opportunities at this event. In this year's edition of the Heart and Sole races, brought to you by locally-owned 303 Running, we're excited to host many Mother/Daughter and […]

  • Head and Neck 5K

    Carpenter Park 3498 E 112th Ave, Thornton, CO, United States

    Get ready for a 5K & 2-Mile walk that begins and ends at the beautiful Carpenter Park. Participants can join us for an in-person run or walk run on their own time with our virtual option. All participants who register by the shirt cutoff date will get a popular soft-style t-shirt! Head & Neck cancer […]

  • Walk MS

    Walk MS

    University of Colorado 2000 Colorado Ave, Boulder, CO, United States

    Walk MS 2024 includes a powerful new experience where you’ll witness how your support changes the lives of people with MS and gets us closer to our ultimate goal: a cure. Whether you live with MS, love someone who does, or are a part of the wider community, you can proudly display your role in […]

  • Mighty Mustang 5K

    Gunnison Middle School 1099 N 11 ST, Gunnison, CO, United States

    The Mighty Mustang! $20/event or $55/family *family rate applied at checkout*

  • Canceled Colorado Run

    Spring Canyon Park 3156 S Overland Trail, Fort Collins, CO, United States

    Celebrate Memorial Day weekend with the Colorado Run 5K/10K! Walk, Jog, Run, Race, or Ruck the Totally Tough 10k along Horsetooth Reservoir or enjoy the flat and fast 5k in Spring Canyon Park. Post-race party with live music and awards.

    $25 – $55
  • Front Range Classic

    The Englewood Campus Stadium 3800 S Logan St, Englewood, CO, United States

    Denver Athletics and Boulder Road Runners are teaming up to bring you a meet that will determine which city has the best Track & Field team in Colorado! The Front Range Classic is a team-scored meet between Colorado's primary cities- Denver, Boulder, Fort Collins, and Colorado Springs. Athletes will select a team when registering and […]

  • REVEL Rockies Marathon

    Bandimere Speedway 3051 S Rooney Rd, Morrison, CO, United States

    This incredibly fast and remarkably beautiful downhill road race takes runners from the forests and canyons of the Rocky Mountains to the foothills of Denver, Colorado. Featuring a perfectly smooth downhill slope and spectacular scenery, this race will be sure to help you set your PR and finally hit that Boston Qualifying time. This event […]

  • 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 […]

  • Women’s Couch to Trails 5K Training Program

    Evergreen, CO 25254 N Turkey Creek Rd, Evergreen, CO, United States

    New to trail running or just want to hone in your rock hopping skills? This 6 week course pairs coached runs at different trails across the front range to work on skills and fitness (such as how to conquer technical terrain and steep hills) and clinics with expert guest speakers like park rangers to talk […]

  • Women’s Beginner Trail Running Course

    Evergreen, CO 25254 N Turkey Creek Rd, Evergreen, CO, United States

    New to trail running or just want to hone in your rock hopping skills?   This 6 week course pairs coached runs at different trails across the front range to work on skills and fitness (such as how to conquer technical terrain and steep hills) and clinics with expert guest speakers like park rangers to talk […]

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