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  • Mountain Ridge Trail Race

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    Mountain Ridge Middle School 10590 Mountain Vista Ridge, Highlands Ranch, CO, United States

    This 10th annual trail race now serves as the Summer Series opener. The rolling hills of this Highlands Ranch course keep the heart rate pumping while offering some of the …

  • Greenland Trail Races

    Featured

    Southern Douglas County is once again home for The Greenland Trail Race.  This race offers four distances: the 4 Miler, 8 Miler, 25K and Colorado's fastest 50K! With Pikes Peak …

  • Barr Lake 30K and 15K

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    Barr Lake State Park (Nature Center) 13401 Picadily Rd, Brighton, CO, United States

    Celebrate Mother's Day with the Endurance Race Series at Barr Lake State Park in Brighton, CO. Take in the beautiful lake views and race to a new PR.​ This 5th …

  • Westminster Trail Race

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    Wayne Carle Middle School @ Standley Lake 10020 100th Ave, Westminster, Westminster, CO, United States

    Beautiful Standley Lake in Westminster in Westminster hosts this this 11th Annual event which is a great course for those competitive, intermediate, or novice runners. The trails are mix of …

  • Boulder Skyline Traverse

    Boulder Skyline Traverse
    Runners Roost - Boulder 629 South Broadway, Suite E, Boulder, CO, United States

    The Boulder Skyline traverse is an iconic trail route that connects five different peaks along the famous Boulder horizon for 17 miles and over 5,000 feet of elevation gain. Join …

    Free