Trail Sisters Women's Half Marathon

The West Line Winder is a scenic trail running event held in Buena Vista, Colorado, featuring two race distances: a 50K (30.6 miles) with 4,000 feet of ascent and a 30K (18.1 miles) with 2,080 feet of ascent. The courses traverse buttery singletrack trails, forest roads, and some paved sections, set..

The Sawatch Ascent 50k is a challenging high-alpine trail race held in Nathrop, Colorado, showcasing the stunning Sawatch Range. Covering 33 miles with 7,000 feet of vertical gain, the course features a mix of 26 miles of singletrack, paved, and gravel roads, including 12 miles on the Colorado Trail..

The 14er Fest 14K is a unique trail race held in Buena Vista, Colorado, in the heart of the Rocky Mountains. Covering 8.7 miles with over 500 feet of elevation gain, the course offers stunning views of the Collegiate Peaks, Arkansas River, and Buena Vista town. Runners start in the vendor village, t..

The 21st Annual Run Through Time Trail Marathon and Half Marathon takes place in Salida, Colorado, featuring challenging courses on dirt and jeep roads as well as narrow, hilly single-track trails with stunning views of Salida and the Arkansas Valley. Elevations range from 7,000 to 9,000 feet. The e..

Sheep Mountain Ultra, part of the Human Potential Running Series, is held in Fairplay, Colorado, starting and finishing at the Town of Fairplay Beach. The event offers three distances: 50-mile ultramarathon, 50k, and a Half Marathon, with a 16-hour time limit and a 300-runner cap. Runners tackle a h..