Emerald Mountain Epic

Howelson Hill Steamboat Springs, CO, United States

The Emerald Mountain Epic presented by Hard Headed attracts some of the nation's best mountain bike and trail running racers, while still offering incredible opportunities for athletes of all skill levels to test their meddle.  Our race is a uniquely rewarding and challenging experience in that it is 90% singletrack with major elevation gains.  To […]

Canceled Rocky Mountain Half Marathon

Stanley Park 380 Community Dr, Estes Park, CO, United States

Escape to the mountains for some fresh air! With the Rocky Mountain Half Marathon, 5K, and Elk Double (half marathon + 5K) you can choose your own adventure! The Rocky Mountain Half Marathon and 5K courses both take place just outside Rocky Mountain National Park and start and end by the lake at the fairgrounds […]

Sheep Mountain Ultras

Town of Fairplay Beach Beech Rd, Fairplay, CO, United States

Make no mistake, the elevation profile for The Sheep Mountain 50 mile and 50k are docile looking. However, the average elevation of over 10,500’ and copious amounts of aggressive terrain, will see you waddle away from this race in shock. Come ready my friends, this mountain throws everything it has at runners, challenging you from […]

Popsicle 5K

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

What better way to end these HOT summer days than with a Popsicle 5K, AND WE'VE ADDED A 10K & HALF MARATHON?!! Come join us for a 5K, 10K, or half and finish with nice cold popsicles Cottonwood Creek Park!  The course will be an out and back on the Cottonwood Creek Trail.  Come on […]

Reece’s Roundup 5K/10K

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

Join the Rubino Family at Philip S Miller Park in Castle Rock on August 14th for the 16th Annual Reece’s Roundup 5K/10K. This event supports Reece Rubino in his fight against Spinal Muscular Atrophy.

$40

All-Out Runapalozza

Apex Center 13150 W 72nd Ave, Arvada, CO, United States

As those summer mornings are just beginning to cool, join us for a celebration to end the season and our 11th Annual Runapalooza! From the award winning Apex Center, these 5K, 10K & Half Marathon courses will run west along the 2020 Best of the Best Ralston Creek Trail through Arvada's open spaces and stunning golf […]

Run for the Ring 5K

Barbara Davis Center for Diabetes 1775 Aurora Ct., Aurora, CO, United States

Starting and finishing at the Barbara Davis Center for Diabetes (BDC), race entry for the 5K and the Kids Zone/Fun Run opens May 16, 2024, with an early bird discount through June 28. Regular registration runs from June 29 to July 30, and “day-of” registration goes from July 31 to race day, August 3. Last year, […]

Flying Colors 5K

Loudy Simpson Park 1009 S Ranney St, Craig, CO, United States

Join us for an untimed Fun Run/Walk to benefit Hospice in our community.  The run will kick off a fun weekend in conjunction with the Moffat County Hot Air Balloon Festival.  Participants will be splashed with vibrant color along the beautiful trails of the Yampa River at Loudy Simpson Park.  Enjoy live music and soaring hot […]

Arapahoe Warrior 5K

Arapahoe High School 2201 E. Dry Creek Rd, Centennial, CO, United States

Come out and support the Arapahoe Warrior Cross Country team at the 3rd annual Arapahoe Warrior 5K. $10.00 of every registration goes directly back to the Arapahoe Cross Country Booster team.

Kennebec Mountain Run

La Plata Canyon Durango, CO, United States

The Kennebec Mountain Run is a tough, scenic 15ish-mile trail run through the La Plata Mountains, just west of Durango in southwest Colorado. Some people like to say that KMR is a perfect tune-up for the Imogene Pass Run, but really, Imogene is a perfect cool-down after Kennebec, and a wonderful introduction to the La Platas!

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