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Les crêtes de la Vallée du Biros

Hiking Moderate Created at: March 17, 2026

Informations

Distance 10.18 km
Elevation gain 874 m
Elevation loss 1282 m
Altitude minimum 953 m
Altitude maximum 1716 m
Altitude Start 1362 m
Altitude End 954 m
Estimated hiking time 4 h
Difficulty Moderate

10.18 km loop hiking starting from Bonac-Irazein. Elevation gain is 874 m, with altitude ranging from 953 m to 1716 m. Estimated time: 4 h. Starting town: Bonac-Irazein (Occitanie, France).

This hike includes 2 significant climbs. With a total elevation gain of 437 m across 2.67 km, with an average slope of 16.4%.

  • Climb 1 (at km 4.09 km): +392 m over 1.96 km, average slope 20.0%
  • Climb 2 (at km 6.59 km): +45 m over 709 m, average slope 6.3%

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