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

  • Pancake Stampede 5K

    South Suburban Race Series
    Hudson Gardens and Event Center 6115 S Santa Fe Dr, Littleton, CO, United States

    Work up an appetite for a deluxe breakfast at The Pancake Stampede 5K on August 15th! The race is a part of Littleton's Western Welcome Week celebration and held before the annual pancake breakfast at Geneva Park. The 5K takes place at Hudson Gardens.

  • Gold Roots Trail Series #3

    Gold Roots Trail Series
    Courtney Ryley Cooper Park 2350 Colorado Blvd, Idaho Springs, CO, United States

    Run the Mighty ARGO hill this summer in a 4 race series! You will have the option of a short loop (~5 miles, ~750' gain) or a long loop (~9 […]

  • San Juan Softie 100

    Durango Nordic Center 49786 Hwy 550 N, Durango, CO, United States

    The softest 100 miler in the San Juans This 100 mile ultra marathon starts and finishes just north of Durango, Colorado. The race will take you through some of the […]

  • Roxborough Ultras

    Roxborough State Park 6323 Roxborough Dr, Littleton, CO, United States

    Roxborough Ultras is a late-summer trail ultramarathon in Roxborough State Park, Colorado, offering a 50K and 50M on fully marked, all-trail courses. Both distances feature sustained climbing, technical sections, exposed […]

  • Westminster Trail Race

    Endurance Race Series
    Wayne Carle Middle School 10020 100th Ave, Westminster, CO, United States

    After a special night edition last year, Westminster returns to its traditional daytime format in 2026 — bringing runners back to a classic morning on the trails at Standley Lake.Now […]

  • Mt Sneffels Half Marathon

    Ouray Ouray, CO, United States

    The Mt. Sneffels Half-Marathon and Kids Fun Run began 25 years ago. In 2021, the 10 K was added. The Race is the foundation’s major fundraising event of the year.  It […]

  • Boulder Rez Marathon

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

    The Boulder Rez Marathon is quickly becoming a Boulder classic! This isn’t just another run around the lake. September temperatures will create the perfect race atmosphere. BBSC will offer a […]

  • Cheyenne Mountain Run

    Cheyenne Mountain State Park 410 JL Ranch Heights, Colorado Springs, CO, United States

    The Cheyenne Mountain Run in Colorado Springs will take place on October 8, 2022 and will feature 3 trail races: a 25K to the top of Cheyenne Mountain for the more advanced trail runner, a 10K for the experienced runners and a 5K trail run for all to enjoy.

  • Med Bow Rail Marathon

    Lake Owen Lake Owen Rd, Albany, WY, United States

    The Friends of the Medicine Bow Rail Trail will host the second annual Med Bow Rail Marathon & Half Marathon on August 13th, 2022 at Lake Owen in the Medicine Bow National Forest near Laramie, Wyoming.

    $50 – $75
  • Frontier Academy Community 5K

    Twin Rivers Park 1501 65th Avenue, Greeley, CO, United States

    The Frontier Academy Community 5K is meant to serve the community of Greeley and the surrounding area. Through this race we hope to fulfill the vision and mission of our […]

    $15 – $30
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