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  • Cayson Pearson Memorial 5K

    Green Mountain High School 13175 West Green Mountain Dr, Lakewood, CO, United States

    This annual fun run/walk (& knockout tournament if you also love basketball) is held each year to honor the memory of Cayson Pearson, award scholarships, raise funds for additional and […]

  • Three Creeks Half Marathon

    Cherry Creek State Park 4201 S Parker Rd, Aurora, CO, United States

    Racing Underground brings you an amazing half marathon this spring! The Three Creeks Half Marathon features a half marathon course that is flat, fast and scenic! Travel on foot through […]

  • Desert RATS Trail Running Festival

    Mack Trailhead on Kokopelli Trail 1022 Old US Hwy 6 & 50, Mack, CO, United States

    Desert Rats Trail Running Festival by UTMB has four unique distances, three days of racing and indescribable views of the desert. There is something for every runner. Enjoy views of […]

  • Run the Ranch Trail Runs

    Sylvan Dale Guest Ranch 2939 N CR 31D, Loveland, CO, United States

    For the 5th year running and benefiting the Heart J organization, we are bringing back an amazing and beautiful trail race to Loveland, CO. You will have 6 distances to […]

  • NoCo Urban Ultra & Relay

    Island Grove Park 501 N 14th Ave, Greeley, CO, United States

    A collaboration event between run.Windsor and Breakaway Athletic Events celebrating the Poudre River Trail. This long-distance race takes you on a sprawling tour of Northern Colorado via the picturesque Poudre River Trail. You'll enjoy […]

  • Mountain Ridge Trail Race

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

    Mountain Ridge takes place near Highlands Ranch primarily on the Douglas County East-West Regional Trail. This gently rolling course will keep the Heart Rate pumping while offering some of the […]

  • RMRR Spring Marathon Training Series #2

    Platte River Trailhead Park Colorado Blvd and E 88th Ave, Thornton, CO, United States

    These Marathon training races are geared towards people training for spring marathons. They are supported runs with aid stations and are timed and scored. There are both 10 mile and […]

  • Amasa Trail Race

    Kane Creek Trailhead Moab, UT, United States

    Amasa Trail Race is a 25K, 15K, 10K through one of Moab's most prized trail systems. Run past petroglyphs, the famous whale rock, red rock, canyons, and the Colorado River, […]

  • Run Through the Decades

    Cottonwood Creek Park 3920 Dublin Blvd, Colorado Springs, CO, United States

    Step back in time and hit the streets to the soundtrack of three iconic eras at Run Through the Decades—a race that celebrates the unforgettable music of the 60s, 70s, […]

  • Dash for Detection 5K

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

    Be part of a movement at Denver's City Park for our 5K event dedicated to raising awareness about oral cancer. Oral cancer can affect any area of the mouth and […]

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