Autumn Run
The Autumn Run is held each year on the third weekend in September, in and around the historic, friendly, and picturesque town of Buena Vista, Colorado. Nestled in the upper …
Colorado Marathon
The Colorado Marathon is an annual race held in the verdant Poudre Canyon, nestled in the picturesque Rocky Mountains, just outside of the beautiful city of Fort Collins. Registration for …
Platte River Half Marathon & Relay
This Platte River Half is held annually in Littleton just outside of the Denver Metro area. Registration for our upcoming 2024 event on Sunday, April 14th is now open for …
Labor Day Half Marathon
Celebrate the last blast of summer at the Labor Day Half Marathon. Sweat your socks off and let summer have its last hooray at Parker’s Salisbury Park just a few …
Westminster Trail Race
Join us at beautiful Standley Lake in Westminster as we race around the lake. The 12th Annual event is a great course for those competitive, intermediate, or novice runners. The …
Mountain Ridge Trail Race
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 …
Highlands Ranch Back Country Wilderness Half Marathon
2025 marks the 17th Annual Backcountry Wilderness Half Marathon in Highlands Ranch! This highly-anticipated event invites participants to embark on a 13.1-mile trail race through captivating landscapes, encompassing both the …
Read more Highlands Ranch Back Country Wilderness Half Marathon
Autumn Run
The Autumn Run is held each year on the third weekend in September, in and around the historic, friendly, and picturesque town of Buena Vista, Colorado. Nestled in the upper …
Trail Sisters Half Marathon
13.1 trail miles that twist and turn through sage brush and ponderosa pines, all while providing stunning views of the Collegiate Peaks. Located in the Rocky Mountains along the roaring …
Parker Labor Day Half Marathon
Celebrate the last blast of summer at the Labor Day Half Marathon. There’s a distance to meet every taste with a half marathon 10K and 5K. The race travels along the …
Calarat Challenge Trail Running Festival
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, …
Revel Rockies
The FINAL YEAR FOR REVEL ROCKIES. This incredibly fast and remarkably beautiful downhill road race takes runners from the forests and canyons of the Rocky Mountains to the foothills of …
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