Anello di escursionismo di 80.68 km con partenza da Bois de la Roche. Il dislivello positivo è di 5095 m, con un'altitudine compresa tra 848 m e 1880 m. Durata stimata: 31 h 30 min. Comune di partenza: Bois de la Roche (Auvergne-Rhône-Alpes, France).
Questa escursione comprende 11 salite significative. Con un dislivello positivo totale di 2959 m su 28.99 km, con una pendenza media del 10.2%.
- Climb 1 (at km 2.38 km): +142 m over 1.35 km, average slope 10.5%
- Climb 2 (at km 16.72 km): +847 m over 7.70 km, average slope 11.0%
- Climb 3 (at km 23.21 km): +132 m over 1.21 km, average slope 10.9%
- Climb 4 (at km 28.29 km): +64 m over 1.25 km, average slope 5.1%
- Climb 5 (at km 37.95 km): +203 m over 3.19 km, average slope 6.4%
- Climb 6 (at km 47.04 km): +66 m over 1.05 km, average slope 6.3%
- Climb 7 (at km 53.76 km): +256 m over 3.63 km, average slope 7.1%
- Climb 8 (at km 59.56 km): +599 m over 4.46 km, average slope 13.5%
- Climb 9 (at km 70.27 km): +91 m over 544 m, average slope 16.7%
- Climb 10 (at km 72.34 km): +94 m over 845 m, average slope 11.1%
- Climb 11 (at km 80.20 km): +465 m over 3.76 km, average slope 12.4%
