Trail Oisans-Matheysine, Col d'Ornon (France)

Isère, Auvergne-Rhône-Alpes, France

28.7 miles (46.2 km) · 10,646 ft elevation gain · Loop · trail · Route

Trail Oisans-Matheysine, Col d'Ornon (France) is a 28.7-mile loop route in Isère, Auvergne-Rhône-Alpes, France, gaining 10,646 feet of elevation. The route follows a up-and-over elevation profile. The terrain breaks into 9 distinct sections including 4 significant climbs. The longest climb covers 4.3 miles gaining 2,165 feet at an average 18.0% grade. Only 35% of the terrain is runnable — expect substantial hiking throughout. The route opens with a climb and finishes with a descent.