The definitive guidebook to the Corsica GR20, one of the world's great treks. • The only two-way guidebook to the both northbound and southbound routes are described in full. • Real IGN Maps included (1:25,000): no need to carry separate maps. • 15 different schedules of 9, 10, 11, 12, 13, 14, 15 and 16 days. Includes both northbound and southbound itineraries. Difficult calculations of time, distance and altitude gain are done for you. Also • Detailed information on equipment and travelling light • Detailed information on getting to/from all trail-heads • Everything the trekker needs to route, costs, difficulty, weather, travel, and more • Full accommodation spectacularly situated mountain huts and campsites • Information for both self-guided and guided trekkers • Numbered waypoints linking the Real Maps to our clear descriptions • Information on Wildlife and Plants