High Lonesome 100
Date
Fri, Jul 17, 2026, 6:00 AM MDTDistance
100 MileUltra
Race feel
Course surface
Trail
Based on the event listing. Check the official site for the full course map.
Ready to register?
Finish signup on the organizer site (check fees and dates there).
From the organizer
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…
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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