Schooley's Mountain is separated from Musconetcong Mountain by a gap and the valley of Spruce Run, which bifurcates the mountain itself higher in its course. The mountain ridge extends about 20 miles northeast, being separated by Budd Lake and the South Branch Raritan River from Mooney Mountain. The northeasternmost point looks out upon Waterloo and the Musconetcong River, the valley of which lies upon its northwestern side; on the southeastern side is Washington Township, Morris County, New Jersey, drained by the South Branch Raritan River.