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: 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 includes:
- Detailed information on equipment and travelling light
- Detailed information on getting to/from all trail-heads
- Everything the trekker needs to know: route, costs, difficulty, weather, travel, and more
- Full accommodation listings: 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.

The GR20 is the stuff of legend. Most seasoned trekkers have it on their bucket lists. It crosses the rugged and spectacular mountains on the Mediterranean island of Corsica. It is one of the wildest treks in Europe. Unspoilt and remote mountain terrain: jagged rocky peaks, sheer cliffs, lofty mountain passes, shimmering cobalt lakes and glorious green pastures bedecked with wild-flowers.