This 25-mile trek through upstate New York's Catskill Mountains requires strong arms as well as strong legs. Sections of the trail require walkers to climb over rock ledges and scramble up rocky chutes. If you count all the ascents along the Devils' Path, which passes over the summits of five of the Catskill's tallest peaks, the total distance climbed is more than 9,000 feet. Why tackle the Devil's Path? The views are stunning from lookout points near or on the summits of the peaks. The Twin Mountains, in particular, offer access to vistas that stretch out for miles over the lower Catskill peaks.