41.46 km loop hiking starting from Frías. Elevation gain is 1582 m, with altitude ranging from 554 m to 1135 m. Estimated time: 15 h 30 min. Starting town: Frías (Castilla y León, Espagne).
This hike includes 8 significant climbs. With a total elevation gain of 1125 m across 13.78 km, with an average slope of 8.2%.
- Climb 1 (at km 910 m): +42 m over 483 m, average slope 8.7%
- Climb 2 (at km 5.00 km): +249 m over 2.07 km, average slope 12.0%
- Climb 3 (at km 7.57 km): +146 m over 1.32 km, average slope 11.0%
- Climb 4 (at km 17.16 km): +362 m over 5.51 km, average slope 6.6%
- Climb 5 (at km 24.84 km): +71 m over 979 m, average slope 7.3%
- Climb 6 (at km 31.89 km): +145 m over 1.90 km, average slope 7.7%
- Climb 7 (at km 35.34 km): +33 m over 489 m, average slope 6.8%
- Climb 8 (at km 41.05 km): +77 m over 1.03 km, average slope 7.5%
