Circuito de senderismo de 88.02 km desde Grenoble. El desnivel positivo es de 6366 m, con una altitud entre 211 m y 1904 m. Duración estimada: 36 h 40 min. Municipio de salida: Grenoble (Auvergne-Rhône-Alpes, France).
Esta ruta incluye 16 subidas significativas. Con un desnivel acumulado de 3961 m a lo largo de 27.91 km, con una pendiente media del 14.2%.
- Climb 1 (at km 7.24 km): +332 m over 1.87 km, average slope 17.8%
- Climb 2 (at km 12.57 km): +502 m over 2.47 km, average slope 20.3%
- Climb 3 (at km 14.99 km): +38 m over 439 m, average slope 8.7%
- Climb 4 (at km 21.35 km): +425 m over 3.43 km, average slope 12.4%
- Climb 5 (at km 26.40 km): +342 m over 2.81 km, average slope 12.2%
- Climb 6 (at km 27.73 km): +77 m over 627 m, average slope 12.3%
- Climb 7 (at km 30.10 km): +86 m over 683 m, average slope 12.6%
- Climb 8 (at km 41.99 km): +699 m over 3.84 km, average slope 18.2%
- Climb 9 (at km 46.49 km): +410 m over 2.02 km, average slope 20.3%
- Climb 10 (at km 53.10 km): +95 m over 908 m, average slope 10.5%
- Climb 11 (at km 62.51 km): +139 m over 1.14 km, average slope 12.2%
- Climb 12 (at km 64.10 km): +184 m over 1.09 km, average slope 16.9%
- Climb 13 (at km 71.60 km): +489 m over 4.94 km, average slope 9.9%
- Climb 14 (at km 80.17 km): +58 m over 771 m, average slope 7.5%
- Climb 15 (at km 84.08 km): +49 m over 489 m, average slope 10.0%
- Climb 16 (at km 87.46 km): +36 m over 391 m, average slope 9.2%
