The Toughest Trek in Europe

Closed group of female trekkers taking on the toughest trek in Europe -The GR20 (Grande Randonnée 20) is a legendary long-distance hiking trail that traverses the rugged interior of Corsica, a French island in the Mediterranean Sea. Stretching approximately 180 km (112 miles) from Calenzana in the north to Conca in the south, it is renowned as one of Europe's most challenging treks.