Ouray 100 Mile Endurance Run

The Sky Pilots Ouray Backyard Ultra is a unique running event held in Ouray, Colorado, featuring a "last person standing" format. Participants complete a 4.167-mile course, and if they finish within an hour, they continue to run each hour until only one runner remains. The course is relatively easy,..

The San Juan Solstice 50 Mile Run is an annual ultra-marathon held in Lake City, Colorado, typically around the Summer Solstice. Established in 1995, the event has evolved into a community benefit for local EMTs. The race features a challenging course that includes high mountain terrain and varying ..

The John Cappis is a challenging mountaineering event held in Silverton, CO, honoring John Cappis, a co-founder of the Hardrock 100. Participants tackle an unmarked, off-trail course of approximately 50K with a significant elevation gain of 19,000 feet, navigating rugged terrain and varying altitude..

The Hardrock 100 is a challenging 100-mile ultramarathon held in the San Juan Mountain Range of Southern Colorado. Participants face a total elevation change of 66,394 feet, with an average elevation of over 11,000 feet, making it one of the most demanding endurance runs in the world. The course fea..

The Silverton Alpine Marathons, set in the stunning San Juan Mountains of Colorado, offers participants a choice of three challenging distances: a 50K, a marathon (approximately 26.7 miles), and an 8-mile run. The courses traverse historic mining ghost towns and feature breathtaking views, with the ..

The Kendall Mountain Run, taking place in Silverton, Colorado, features a challenging 12-mile and an 11K race that ascends to the summit of Kendall Mountain, reaching an elevation of 13,066 feet. Participants will experience a scenic climb starting from 9,318 feet, culminating in a thrilling scrambl..