Rock Hawk Trail Race

Phillip S. Miller Park 1375 West Plum Creek Pkwy, Castle Rock, CO, United States

Held on the gorgeous, thrilling and rolling trails of Castle Rock’s Miller Park & Ridgeline Trail systems. While not overly technical, these trails will challenge and excite, as you soak up the amazing views. This is an excellent race for both first-time and veteran trail runners, and provides a nice test for those who are […]

RMRR Fall Marathon Training Series

Riverwalk Ballfields 9830 Riverdale Rd, Thornton, CO, United States

RMRR’s Marathon Training Series provides 10M and 20M races that are low cost, friendly, fully supported, and officially timed.  All you need to do is focus on your running!  Our races fit perfectly in training schedules for Colfax, Boston, New York, Chicago, and other full and half marathons. Everyone is welcome at our MTS races:  RMRR members, […]

Bluffs 8K Trail Run

Prairie Sky Park 10249 Ridgegate Circle, Lone Tree, CO, United States

The Bluffs 8K Trail Race has rolling hills and beautiful views as you run or walk through the Bluffs Regional Park. The race will start/finish near the Prairie Sky parking lot o n August 28th.

$35.00

Log Hill Hustle​ 5K/10K

Divide Ranch and Club 151 Divide Ranch Cr, Ridgway, CO, United States

The Fortuna Tierra Club is hosting the in-person, seventh annual Log Hill Hustle, Fun Run and fundraiser on Sunday, August 28 at 8 AM starting and finishing at the Divide Ranch and Club Clubhouse at 151 Divide Ranch Circle, Ridgway, CO 81432 The 5k (3.1 miles) and 10k (6.2 miles) races will wind through the Divide Ranch […]

Smoky Hill Community 5K

Smoky Hill High School 16100 E Smoky Hill Rd, Aurora, CO, United States

Looking for a fun way to stay active? Look no more! Come out and Support Smoky Hill Community. Come and join us on our 2nd annual Smoky Hill Community 5K Run/Walk. This event is for everyone, runners and walkers of all ages and levels. Bring your neighbors, friends, and family members. Come out and experience […]

Flat and Fast Eltuck Valley 12K

Lory State Park 708 Lodgepole Dr, Bellvue, CO, United States

Join us each Tuesday evening in August for a fun series of shorter midweek trail races. Our goal is to offer a fun, low-key series of races designed to give newer trail runners an opportunity to dip their toes into the trail racing waters, and to offer more experienced trail racers a chance to sharpen […]

$25

Calarat Challenge Trail Running Festival

Cal-Wood Education Center 2282 County Road 87,, Ward, CO, United States

Join us Labor Day weekend for the Calarat Challenge Trail Running Festival. We start the festivities off on Saturday night with a 5K that you can run, walk or hike, and our Kids 1K. Then on Sunday morning, we have the 1/2 MARATHON and 10K. All trail races start and finish at the Cal-Wood Education […]

Grand Traverse Mountain Run

Mt. Crested Butte Mt. Crested Butte Ski Resort, Crested Butte, CO, United States

The Grand Traverse Mountain Run is a point-to-point ultra marathon from Crested Butte to Aspen, Colorado. The course follows the route of the Grand Traverse Backcountry Ski race. In total, runners travel 40 miles across the Elk Mountains with over 6,000′ of elevation gain.

Canceled Run4One 4K

Fox Run Regional Park Colorado Springs, CO, United States

Walk in their shoes, Run for their future! Join us for the 1st annual 4K run/walk and .5 mile kids race with Ethiopian inspired obstacles! One Love is a Colorado based non-profit dedicated to educate enrich, and empower children and families in Addis Ababa, Ethiopia. Run4One is an experience designed to give a glimpse into […]

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