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High Lonesome 100

Friday, July 17, 2026 · Nathrop, United States

Distances

160.9 km

About this race

A high-flying endurance race through Colorado's Sawatch Range. With 23,500' of vertical gain and reaching 13,100', it's a challenging course. Run a loop through beautiful single track, navigating the Continental Divide and Colorado Trail. Pass through 2 ghost towns, conquer 5 alpine passes, and traverse remote basins and soaring ridges. Created in the spirit of classic 100-milers, the High Lonesome 100 delivers a true mountain race.

Start location

Map showing the location of High Lonesome 100
Co Rd 321
Nathrop, CO
Driving directions
Register →via runsignup.com Search on Google

Typical weatherJuly

35°Clow 22°C
20mm precip avg
Sunny most days
Hottest month — start at sunrise.

Please verify event details with the organizer before registering.

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