Canceled Silverton Ultra Dirty

Silverton School 1160 Snowden, Silverton, CO, United States

Silverton Ultra Dirty is a tough but rewarding trek around some of the most beautiful scenery in the country. It will challenge you in all the best ways. Come join a welcoming community and show off what you're capable of.

$270

Backcountry Marathon and Heavy Half

Aspen City Hall 130 S Galena St, Aspen, CO, United States

Utilizing the beautiful trails that surround Aspen, The Aspen Backcountry offers two options, a full or heavy half-marathon, both run almost exclusively on dirt trails. The diversity of terrain, challenging ascents & descents and overall elevation gain will challenge even the most well-trained athletes. With spectacular views of the Elk Mountains above and the city […]

Event Series PPRR Nielson Challenge

PPRR Nielson Challenge

North Monument Valley Park 1794 Culebra Ave., Colorado Springs, CO, United States

Race Format The first time you run this event, you'll establish a base time for yourself. This base time is used to generate a handicap time. The handicap time is calculated using an algorithm developed by Bob Royse, and it's geared to favor a beginning runner and the slower runners. Click here for an explanation of the […]

Event Series PPRR Nielson Challenge

PPRR Nielson Challenge

North Monument Valley Park 1794 Culebra Ave., Colorado Springs, CO, United States

Race Format The first time you run this event, you'll establish a base time for yourself. This base time is used to generate a handicap time. The handicap time is calculated using an algorithm developed by Bob Royse, and it's geared to favor a beginning runner and the slower runners. Click here for an explanation of the […]

Sunroom Brewing 5K

Sunroom Brewing 3242 South Acoma Street, Englewood, CO, United States

Join us for the Sunroom Brewing 5k on August 5, 2023, for a 5k-ish, fun run event that starts and ends at this awesome taproom in Englewood. Run, walk, jog - whatever goes! Complete the course and celebrate with us and a FREE, local craft brew at the finish line. Start windows will be available […]

Two22 Brew 5K

Two22 Brew 4550 South Reservoir Road, #Suite 1300, Aurora, CO, United States

Join us for The Two22 Brew 5k on August 6, 2023, for a 5k-ish, fun run event that starts and ends at this awesome taproom in Aurora. Run, walk, jog - whatever goes! Complete the course and celebrate with us and a FREE, local craft brew at the finish line. Start windows will be available […]

Ladies night trail run, social and bra drive

Runners Roost - Golden 2120 Ford St, Golden, CO, United States

Join us for a fun, free event celebrating women runners where you can meet fellow trail runners, demo shoes and enjoy shopping discounts to gear up for fall trail running adventures! We will kick off the evening with a social trail run at South Table Mountain, your pace, your distance starting at 6pm. More details: […]

Free
Event Series Denver Twilight 5000

Denver Twilight 5000

The Englewood Campus Stadium 3800 S Logan St, Englewood, CO, United States

What began as a low-key 5K on the esplanade in Boston has grown to become an international series of track meets featuring the same accessible distance and the same incredible grassroots vibe, with paced races for runners of all abilities in 20 cities across the US, Mexico, Canada and the UK. Whether you’re stepping down […]

Event Series Lory Summer Trail Series

Lory Summer Trail Series

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

Join us this 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 their speed on […]

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