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Lacs d'Ayous

Lacs d'Ayous

Vincent Couvert planned a hike

May 26, 2026

Lacs d'Ayous

Hard

05:38

16.0km

2.8km/h

790m

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Overview

Hard hike. Very good fitness required. Mostly accessible paths. Sure-footedness required. The starting point of the route is right next to a parking lot.

Your route passes through protected areas

Please check local regulations for:

Parc national des Pyrénées (cœur)

Waypoints

Start point

Parking

Get Directions

5.10 km

Lac Roumassot

Highlight • Lake

Lake Roumassot is the lowest of the Ayous lakes. This natural lake of glacial origin is located at an altitude of 1,845 meters and serves as a summer pasture for …

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6.02 km

Lac Gentau and View of Pic du Midi d'Ossau

Highlight • Lake

The Ayous lakes form a group of six lakes: Castérau, Miey, Gentau, Bersau, Paradis and Roumassot.

Arranged in stairs, they form a magnificent amphitheater to land and admire the Pic …

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6.55 km

Refuge d'Ayous

Highlight • Mountain Hut

The Ayous refuge is open from the end of May to the beginning of October. For the precise dates, which change from one year to the next, you can go …

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7.60 km

Lac Bersau

Highlight (Segment) • Lake

Lake Bersau is located 2,080 meters above sea level, at the foot of Pic Casterau. It is one of the six lakes of Ayous which mark out the paths of …

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9.25 km

Lac Castérau

Highlight • Lake

Lake Castérau is located on the edge of the road to Saint-Jacques-de-Compostelle. It is one of the six lakes of Ayous. Located at the foot of the Castérau peak (2,227 …

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13.2 km

Ossau Valley

Highlight • Gorge

This valley follows the course of the Gave de Bious and offers a superb deep and clear panorama. A green expanse in contrast with the passes, peaks and rocky massifs …

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16.0 km

End point

Parking

Way Types & Surfaces

Way Types

9.62 km

3.32 km

2.41 km

694 m

Surfaces

6.92 km

5.15 km

2.62 km

694 m

597 m

< 100 m

Route Details

Elevation

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Lacs d'Ayous

Lac Roumassot

Lac Gentau and View of Pic du Midi d'Ossau

Refuge d'Ayous

Lac Bersau

Lac Castérau

Ossau Valley

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