The Greenland Trail Races offer four outstanding distances in southern Douglas County. Run the 4 Miler, the 8 Miler, the 25K, or tackle the 50K ultramarathon, Colorado’s fastest 50K! With …
Mountain Ridge Middle School
10590 Mountain Vista Ridge, Highlands Ranch, CO, United States
This 11th annual trail race serves as the Summer Series opener. It has quickly become a runner favorite among Endurance Race Series front range events. The rolling hills of this …
June 9th marks the inaugural IN-PERSON DU Dash hosted by Colorado Ducks Unlimited on the Santa Fe Trail at Palmer Lake. Check out all the race information here.
Open to all runners, this camp offers an introduction to the Leadville Trail 100 Run presented by La Sportiva and is the perfect training tool for this year’s race. Seasoned …
Runners Roost - Golden
2120 Ford St, Golden, CO, United States
Join at Runners Roost Golden on Saturday June 22 for TrailApalooza! Meet our top trail brands and go on a fun trail run. Food and beverage to follow the run!
Join us Sunday June 23rd, for the Sunset Trail Running Festival in Gold Hill, Colorado. There will be a 28K (17.4M), 12K (7.7M), 5K and Kids 1K trail race, that …
Run through the historic mining district’s challenging old mining roads and trails, and hit a high of 13,185 feet at Mosquito Pass during the Life Time Leadville Trail Marathon and …
Take on 50 miles of extreme territory that starts at 10,200 feet and reaches 12,000 feet on four separate occasions at the Life Time Silver Rush 50 Run presented by …
Barr Lake State Park (Nature Center)
13401 Picadily Rd, Brighton, CO, United States
This 6th Annual event showcases a course that is our flattest and fastest on the ERS schedule with less than 100' of elevation gain per loop. Runners will start and …
Runners Roost - Boulder
629 South Broadway, Suite E, Boulder, CO, United States
The Dirt Circus sponsored by UltraSignUp will be hosting the Colorado event at the Runners Roost in Boulder. Join multiple trail brands, race directors, and gear reps for an expo …