High Lonesome 100
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High Lonesome 100 - course overview
The High Lonesome 100 is a 100-mile trail running event in the Sawatch Range of the Colorado Rocky Mountains. The loop course starts and finishes at the base of Mount Princeton and traverses National Forest and state lands in Chaffee County. The route includes about 23,300 feet of total elevation gain, an average elevation near 10,426 feet, and a high point around 13,100 feet, with a 37-hour cutoff.
The course surface is a mix of singletrack, mining roads, gravel, and paved roads, with approximately 66% singletrack, 27% mining roads, 3% gravel roads, and 4% paved roads. About 15% of the route lies above tree line. Runners spend roughly 27 miles on the Continental Divide Trail and 35 miles on the Colorado Trail. The loop passes over five alpine passes and through two historic ghost towns, and includes long sections of alpine ridgelines and high basins.
Course materials available include elevation profiles, maps, turn-by-turn directions, and downloadable GPX/KMZ files. The event is organized by Freestone Endurance and operated by an all-volunteer team. The race is fully permitted through the United States Forest Service, Chaffee County, and the Colorado Land Board and takes place on lands that are the ancestral homelands of several bands of the Ute tribe. Visit the organization's website for the most recent information.
