The most common reason for visiting the Reeks is to climb Ireland's highest mountain, Carrauntoohil. The popular route starts from Cronin's Yard () and enters the Hag's Glen to climb the Devil's Ladder (the col between Carrauntoohil and Cnoc na Toinne), from which the summit is accessed. A more challenging route is via the Hag's Tooth Ridge which circles the Eagle's Nest, and takes in Beenkeragh, and the Beenkeragh Ridge.