Passage du Fort, Tour De la Grande Roche Blanche par les couloirs

18.45 km loop ski touring starting from Grande Montagne d'Arvillard. Elevation gain is 2000 m, with altitude ranging from 1100 m to 2290 m. Estimated time: 10 h 40 min. Starting town: Grande Montagne d'Arvillard (Isère, France).

This hike includes 3 significant climbs. With a total elevation gain of 1940 m across 8.31 km, with an average slope of 23.3%.

• Climb 1 (at km 5.55 km): +1191 m over 5.41 km, average slope 22.0%
• Climb 2 (at km 9.26 km): +465 m over 1.70 km, average slope 27.4%
• Climb 3 (at km 11.53 km): +283 m over 1.20 km, average slope 23.6%