Milestone Mountain, Mountain peak in Tulare County, California

Milestone Mountain is a peak in the Sierra Nevada standing at 13,644 feet and marking a natural boundary between Sequoia and Kings Canyon National Parks. The mountain forms part of the Great Western Divide and features technically demanding climbing sections on its routes.

The name Milestone Mountain comes from the obelisk-shaped rock on its summit, and the peak has been called this since at least 1873. The summit lies on the boundary between Sequoia and Kings Canyon national parks, on the Great Western Divide. The sources record no first ascent date for the mountain.

The peak takes its name from the striking obelisk-shaped rock formation at its summit, which serves as a landmark for hikers navigating the high country. This distinctive stone tower is visible from considerable distance and helps climbers orient themselves in the backcountry.

Ascending this peak requires class 3 climbing skills and should only be attempted by experienced mountaineers comfortable with exposed terrain. The southern approach offers the most direct route, but all paths in this region demand proper acclimatization and readiness for alpine conditions.

Milestone Mountain lies 0.6 miles (0.97 km) south of Midway Mountain and 3.8 miles (6.1 km) northeast of Triple Divide Peak, on the Great Western Divide. Its summit sits exactly on the boundary between Sequoia and Kings Canyon national parks, so a climber can stand in two parks at once.