Circuito de senderismo de 87.59 km desde Serrières-de-Briord. El desnivel positivo es de 4274 m, con una altitud entre 204 m y 1216 m. Duración estimada: 32 h 40 min. Municipio de salida: Serrières-de-Briord (Auvergne-Rhône-Alpes, France).
Esta ruta incluye 11 subidas significativas. Con un desnivel acumulado de 2442 m a lo largo de 27.88 km, con una pendiente media del 8.8%.
- Climb 1 (at km 10.25 km): +759 m over 7.43 km, average slope 10.2%
- Climb 2 (at km 13.92 km): +90 m over 1.12 km, average slope 8.0%
- Climb 3 (at km 21.21 km): +343 m over 3.73 km, average slope 9.2%
- Climb 4 (at km 23.59 km): +76 m over 834 m, average slope 9.1%
- Climb 5 (at km 35.17 km): +271 m over 2.95 km, average slope 9.2%
- Climb 6 (at km 42.56 km): +75 m over 1.49 km, average slope 5.0%
- Climb 7 (at km 48.40 km): +142 m over 1.30 km, average slope 11.0%
- Climb 8 (at km 52.50 km): +107 m over 1.03 km, average slope 10.4%
- Climb 9 (at km 72.13 km): +352 m over 4.97 km, average slope 7.1%
- Climb 10 (at km 81.78 km): +136 m over 1.67 km, average slope 8.2%
- Climb 11 (at km 85.78 km): +91 m over 1.36 km, average slope 6.7%
