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  • 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” […]

  • RMRR 8M and 5K

    RMRR Trophy Series
    Star K Ranch 16002 E Smith Road, Aurora, CO, United States

    Everyone – slow, fast, or in-between –  can win  at RMRR Trophy Series races.  With our handicap scoring system, we predict YOUR finish time based on recent running results, giving you a great […]

  • 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 […]

  • PPRR Fall Series I

    PPRR Fall Series
    Bear Creek Regional Park 245 Bear Creek Road, Colorado Springs, CO, United States

    The Fall Series consists of four trail races in four different city/county parks. The trails range from well-maintained to rocky with tree roots. Each event is a unique challenge at […]

  • 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 […]

    $65 – $120

  • CMRA Stone House Triple-Cross

    Stone House Park 2800 S. Estes St., Lakewood, CO, United States

    The race will begin just west of Estes St across from the Stone House Park on Bear Creek in Lakewood. It will head west mostly on dirt trails through the […]

  • The Pretzel Run

    Louisville Community Park 955 Bella Vista Dr, Louisville, CO, United States

    Oktoberfest in Colorado!! Owned and managed by a Bavarian Race Director.... The Annual PRETZEL RUN will move 8 blocks down to Louisville Community Park for a LARGER BIER GARDEN, LIVE […]

    $35.00

  • Manitou 5K

    Fields Park 114 El Paso Blvd, Manitou Springs, CO, United States

    Come celebrate the beauty of Manitou Springs! Race starts and ends in Fields park. Run along the rolling creek, view the art along the Creekwalk, loop the beautiful parks full […]

  • Westy Half and 5K

    Westminster Promenade 10600 Westminster Blvd, Westminster, CO, United States

    Join the WESTY HALF and 5k this fall! The Hometown Race Series features half marathons and 5k distance events in outlying communities outside the Denver and Boulder metro areas. This […]

    $45 – $80

  • Indian Creek Fifties

    Indian Creek Campground 2499 Pine Creek Rd, Sedalia, CO, United States

    The Indian Creek Fifties takes advantage of the challenging and little used terrain just southwest of the Denver Metro area. Loop 1 climbs to 8000′, and quickly flows down into […]

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