100K

**BIG CHANGES TO SILVERHEELS** HPRS continues to work in earnest on a newly revamped Silverheels Trail Runs experience. Traditionally the Silverheels 100-Mile was held in concert with The Last Call […]

Canyonlands 100K, 50 Mile, 50K, Marathon, Half Marathon, and 15K Canyonlands Ultra starts and finishes at the Behind the Rocks Trail, along the border of the Behind the Rocks Wilderness Study […]

Get ready for an unforgettable adventure at  Ring the Springs trail running races in the stunning Colorado Springs, Colorado! This thrilling event showcases the area’s incredible natural beauty, with a […]

Experience the spring-fed meadows, massive rocks of Pikes Peak granite, and sweeping views of Colorado’s most spectacular mountains in the Great Divide Ultras. This Colorado early season 100m, 100k, 50k […]

The Never Summer 100km & 60km will take place almost entirely within the boundaries of State Forest State Park and run between the Never Summer Mountains on the northern border […]

The Bear Chase Race Endurance Festival is a 100K, 50 Mile, 50K, Half Marathon, Baby Bear 10K and 5K trail race at beautiful Bear Creek Lake Park, in Lakewood, CO. […]

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 […]

Come join us on the Rainbow Trail in the Sangre de Cristo mountains. Run beneath the watchful eye of these gorgeous, and ominous, mountains. This race is full of festivities, […]