Operation Yosemite
June Lake, United States • 8 Aug 2026
Operation YOSEMITE 2026
Operation YOSEMITE is an outdoor endurance event scheduled for August 8, 2026, in Mono County, California. The event takes place at Silver Lake, with the course utilizing the Rush Creek Trailhead in June Lake. Participants carry a specified dry load of 20 lbs throughout the duration of the activity.
The event offers four distinct distance options, each with a corresponding elevation profile:
- 22 miles with an elevation gain of 5,226 ft
- 19 miles with an elevation gain of 4,199 ft
- 12 miles with an elevation gain of 3,238 ft
- 6 miles with an elevation gain of 1,919 ft
The terrain and elevation vary significantly across the different routes, ranging from the shorter 6-mile trek to the full 22-mile course. All participants begin at the same trailhead location in the June Lake area. Visit the organization's website for the most recent information.