Castle Peak is located in the largest roadless area in the lower 48 states that is not a designated Wilderness Area. There has been a proposal to create a White Clouds-Boulder Wilderness Area that would encompass Castle Peak. Castle Peak is managed by the United States Forest Service and the area surrounding the peak can be easily accessed. Camping is permitted anywhere is Sawtooth National Forest and the lakes surrounding Castle Peak provide excellent places to stay.
The peak rises to the northeast of the Chamberlain Lakes and south of Castle Lake and Merriam Peak. There are trails from parking area to the vicinity of Castle Peak, although no trails go up the peak itself. The easiest route up Castle Peak is as class 3 scramble from the Camberlain Basin.
Activity: Hiking, Hot Springs Elevation: 11,815 ft (3,601 m)