South Chalone Peak Trail

South Chalone Peak Trail is an out-and-back from Bear Gulch Reservoir along the Chalone Peak approach and its unmaintained southern branch. The mapped route is about 9.8 miles round trip from the reservoir: 3.3 miles to the North Chalone area, then another 1.6 miles each way on the South trail. The walk from Bear Gulch Day Use Area to the reservoir adds distance. Allow six to eight hours; this is a long, strenuous day, not a quick summit detour.

The Chalone approach climbs over dirt and rock in open country, with no shade; the last part toward North Chalone follows a dirt road. The South turn leaves the broad road by a gate or cattle guard and its small sign is easy to miss. Check the map at the junction instead of continuing on the wider road. There’s no water along the trail, and summer temperatures on the Chalone Peaks can run hotter than at the parking area. Start with enough water for the whole outing and avoid the hottest part of a summer day. Pets aren’t allowed.

The unmaintained branch wraps around North Chalone’s west side, drops about 700 feet to a saddle, then curves along the east face of South Chalone toward a ridge southeast of its true summit. Reports describe the summit as brushy and say the mapped trail ends short of it, so don’t count on a maintained summit scramble or a clear view from the top. The payoff is a distinct southern Gabilan vista along the extension. Check current park alerts before you go; there’s no separate trail fee or reservation, but park entry rules apply.