France has 26 trails including medium, difficult, extra difficult, and easy difficulty trails. The trail with the highest elevation climb is Chamonix to Zermatt - Haute Route and the one with the least climb is GR 34. The longest trail is GR 10 at 912 km. To complete this hike you should budget at least 54 days. For a shorter adventure you can try Way of Henri IV at 50 km. This could be done in as little as 2 days. Trails with the best offering of hostels include Tour du Vieux Chaillol, GR 98, GR 34, Way of Henri IV, and GR 1.