78.46 km loop hiking starting from Irun. Elevation gain is 3999 m, with altitude ranging from 3 m to 351 m. Estimated time: 27 h 50 min. Starting town: Irun (Nouvelle-Aquitaine, France).
This hike includes 7 significant climbs. With a total elevation gain of 1795 m across 23.32 km, with an average slope of 7.7%.
- Climb 1 (at km 46.15 km): +598 m over 8.43 km, average slope 7.1%
- Climb 2 (at km 64.99 km): +126 m over 1.85 km, average slope 6.8%
- Climb 3 (at km 68.02 km): +101 m over 1.25 km, average slope 8.1%
- Climb 4 (at km 91.60 km): +283 m over 2.07 km, average slope 13.7%
- Climb 5 (at km 126.00 km): +455 m over 5.21 km, average slope 8.7%
- Climb 6 (at km 134.54 km): +112 m over 2.37 km, average slope 4.7%
- Climb 7 (at km 139.27 km): +120 m over 2.13 km, average slope 5.6%
