High Lonesome 100

The High Lonesome 100 is a high flying endurance race in the Sawatch range of the Colorado Rocky Mountains. With 23,500' of vertical gain and reaching an elevation of 13,100', it's a hell of a course. The race runs in a loop through some of the most beautiful single track in the state, and takes runners on the Continental Divide and Colorado Trail, through 2 ghost towns, over 5 alpine passes, through remote basins, and over soaring ridges. It's also run and staffed by experienced and quality individuals, so you'll get to be a part of a wonderful community. If you're looking for a true mountain race, created in the spirit of the classic 100 milers, then look no further.

Stats

• Entry fee: $465
• Start/Finish Location: County Road 321, Mount Princeton, Colorado (coordinates: 38.740282, -106.161237)
• Distance: 101 miles
• Average Elevation: 10,600'
• High Point: 13,100'
• Low Point: 8,150'
• Total Elevation Gain: 23,500'
• Cut off: 37 hours
• Course type: 66% single track, 21% mining roads, 10% gravel roads, and 3% paved roads

Ready to test your limits? The High Lonesome 100 brings a highly anticipated Ultra to Nathrop on July 17, 2026. Expect a fantastic route right in the heart of Colorado.