 It is narrowest in the southern part of the range, running east to west, and broadest at the northern part of the range, running km east to west.The eastern side of the Hira Mountains looks steeply over Lake Biwa, while the western side of the range forms a gentler valley in Kyoto.The three main peaks of the Hira Mountains are Mount Bunagatake, the highest with an elevation of ; Hōraisan, at , and Mount Uchimi at .