Guidebook to 36 walks in Andalucia. The Sierra Nevada regions of Aracena, Grazalema, Los Alcornocales and Gaucin, La Axarquia, the Alpujarras and Cazorla each have 6 day walks. Most of the walking routes are circular and range from 5 to 21km, are graded for difficulty, and many are suitable for all walkers.