Logo

High Lonesome 100

Mount Princeton, United States • 18-19 Jul 2025

The High Lonesome 100 is a challenging 100-mile trail race set in the stunning Sawatch Range of the Colorado Rocky Mountains. Participants will experience a grueling course featuring 23,500 feet of vertical gain, reaching elevations of 13,100 feet. The race includes a loop that traverses beautiful singletrack trails, the Continental Divide, and the Colorado Trail, passing through two ghost towns and over five alpine passes. With a time limit of 37 hours, this event is designed for serious endurance athletes and is supported by a dedicated team of experienced volunteers, fostering a strong community spirit among participants. Visit the organization's website for the most recent information.

United States Colorado Mount Princeton

Race information

Website
100 mi
23500 m+
100 Miles
Visit the organization's website for the most recent information.
Trail runs nearby

Spirit Trail Run

Buena Vista - 8 mi from Mount Princeton

The Spirit Trail Race is a running event held in Buena Vista during Memorial Day Weekend, featuring a marathon, half-marathon, and 9K race. Participants start at the South Main Town Square area, with race times beginning early in the morning. The event supports local organizations such as the Buena..

Transrockies Run

Buena Vista - 8 mi from Mount Princeton

The TransRockies Run is a six-day, 120-mile trail running event held in Colorado, offering participants an adventurous experience through stunning mountain landscapes. Known for building a strong community, the event attracts runners from around the world who seek challenging courses, camaraderie, a..

West Line Winder

Buena Vista - 8 mi from Mount Princeton

The West Line Winder is a scenic trail running event held in Buena Vista, Colorado, featuring both 30K and 50K races. Set against the stunning backdrop of the Collegiate Peaks, participants can enjoy a mix of singletrack and forest roads, with significant elevation gain. This event caters to runners..

Sawatch Ascent

Nathrop - 8 mi from Mount Princeton

The Sawatch Ascent is a challenging 50k running event set in the stunning Colorado mountains, taking place on September 28, 2025. Starting and finishing at the base of Mount Princeton, participants will experience a significant elevation gain of 7,000 feet, reaching a high point of 13,150 feet. The..

Run Through Time Trail Marathon

Salida - 20 mi from Mount Princeton

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