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

  • OTILLO Swimrun

    Horsetooth Reservoir 4200 W County Road 38 E, Fort Collins, CO, United States

    Welcome to the world of ÖTILLÖ Swimrun! ÖTILLÖ Swimrun, the original swimrun race, embodies the spirit of adventure, endurance, and teamwork. Originating in Sweden, ÖTILLÖ translates to “island to island” in Swedish, reflecting the essence of the sport where participants traverse across a series of islands by swimming and running, often in challenging and picturesque […]

  • Strides for Sierra 5K

    Sierra Elementary 7771 Oak St, Arvada, CO, United States

    Join us Sunday October 5th at 9:00am for the Third Annual Strides for Sierra 5K run/walk fundraiser.  Get your sweat on running or enjoy a leisurely stroll through the beautiful neighborhood surrounding Sierra Elementary!  Starting at 10:00am the little ones can participate in a 1K fun run around the Sierra track.  Afterwards stay and enjoy […]

  • Liberty Energy 5K

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

    Please join Liberty for our 5K run and walk, benefitting the Bettering Human Lives Foundation. This family-friendly event will include live music, a beer garden, face painting, food trucks, and more! Every dollar we raise will support the foundation's mission of expanding access to clean-burning cooking fuels in sub-Saharan Africa by funding African innovators and […]

  • Long View Marathon

    City Park - Fort Collins 1500 W Mulberry St, Fort Collins, CO, United States

    Showcasing a unique city-to-city trail connection, The Long View Marathon and Half Marathon runs from Fort Collins to Loveland. Together, Gnar Runners and Sweetheart City Racing bring a unique collaboration to Colorado’s running scene in this one-of-a-kind race event.

    $65 – $120
  • Sage Burner Trail Race

    Hartman Rocks Recreation Area Gunnison, CO, United States

    Nestled in the Rocky Mountains, about 2 hours east of Grand Junction and 3 hours west of Denver, lies a small running jewel called Gunnison, Colorado. Visit Gunnison, and you’ll be treated to some of the best outdoor recreation this planet has to offer.

  • Suffer Better 50K/25K Trail Run

    Staunton State Park 12102 S Elk Creek Rd, Pine, CO, United States

    We are stoked to once again invite you all to come run with us at Staunton State Park, off of Highway 285 near Conifer, CO, on October 15, 2022.  We are even more stoked to be able to add to our existing 25 and 50K event offerings, this year adding a special 25K Fishslappers edition […]

    $65
  • Gold Hill Classic

    Adventure Lodge - Boulder 91 Fourmile Canyon Dr, Boulder, CO, United States

    Nestled in the canyons of Boulder County, Colorado the Gold Hill Classic 30k launches runners into a thrilling mix of grit, grind, and gorgeous mountain views. Wind your way through soul-shaking climbs, fast-flowing descents, and high-altitude rollers. With every turn, the course serves up sweeping vistas, winding dirt roads, and that pure, untamed energy only found […]

  • Breckenridge Road Marathon

    Breckenridge Recreation Center 880 Airport Road, Breckenridge, CO, United States

    THE BRECKENRIDGE ROAD MARATHON IS JUST THAT... ONE-OF-A-KIND EXPERIENCE, WITH A LITTLE SOMETHING FOR EVERYONE! ARE YOU LOOKING FOR THAT BUCKET LIST RACE, A WEEKEND GET AWAY WITH FRIENDS, OR JUST A GREAT RUN IN THE MOUNTAINS... THEN THIS IS THE PERFECT RACE FOR YOU! THE BRECKENRIDGE ROAD MARATHON, HALF-MARATHON AND 10K WILL START ATOP […]

  • Rubey Rescue Run

    Buttermilk Ski Resort 38700 Highway 82, Aspen, CO, United States

    Join us for a 5K uphill race on Buttermilk Mountain—with your furry friends, or without! Starting at the base near Buttermilk Mountain Lodge (formally known as Bumps) and climbing 1,700 feet to the Cliff House, this timed race ends with stunning views of the Maroon Bells. Prizes for top 3 female and male finishers. Also […]

  • Boulder XC Series I

    Valmont City Park 5110 Valmont Rd, Boulder, CO, United States

    EVENTS 9:00AM 10 YEARS & UNDER - 1K 9:15AM 16 YEARS & UNDER - 3K (1 x 1K + 1 x 2K) 9:40AM OPEN - 5K (1 x 1K + 2 x 2K)

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