Trekking the Corsica GR20 - Two-way trekking guide - Real IGN Maps 1:25,000

- The only two-way guidebook to the GR20: both northbound and southbound routes are described in full. - Real IGN Maps included (1:25,000): no need to carry separate maps. - 15 different itineraries. Includes both northbound and southbound itineraries. Difficult calculations of time, distance and altitude gain are done for you.