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Lac Roumassot – Ossau Valley loop from Lac de Bious-Artigues

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Hiking trails & Routes

Lac Roumassot – Ossau Valley loop from Lac de Bious-Artigues

Moderate

4.8

(91)

1,441

hikers

Lac Roumassot – Ossau Valley loop from Lac de Bious-Artigues

03:44

11.1km

540m

Hiking

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: March 1, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Parc national des Pyrénées (cœur)

Waypoints

Start point

Parking

Get Directions

151 m

Lac de Bious-Artigues

Highlight • Lake

Bious-Artigues is an artificial reservoir located at an altitude of 1,416 meters. Its compound name is the association of the name of the Bious valley with the term Artigues which designates clearings cleared in the Middle Ages.

Translated by Google •

Tip by

1.31 km

View of Lake Bious-Artigues

Highlight • Viewpoint

Reservoir with a wonderful mountain panorama

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Tip by

2.22 km

Beautiful ascent through forest

Highlight • Other

4.16 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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4.66 km

Lac du Miey

Highlight • Lake

Lac de Miey is located at an altitude of 1,914 meters in the Ossau valley. It is located between Lake Gentau higher up and Lake Roumassot below.

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5.08 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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9.05 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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Tip by

10.5 km

Lake Bious Artigues

Highlight (Segment) • Lake

Mountain reservoir with mountain panorama in the background.
The parking lot at the foot of the dam was the starting point of the hike

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Tip by

11.1 km

End point

Parking

Way Types & Surfaces

Way Types

7.07 km

3.92 km

112 m

Surfaces

6.77 km

2.78 km

1.14 km

299 m

112 m

< 100 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (1,960 m)

Lowest point (1,420 m)

Weather

Monday 18 May

14°C

5°C

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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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Lac Roumassot – Ossau Valley loop from Lac de Bious-Artigues

Lac de Bious-Artigues

View of Lake Bious-Artigues

Beautiful ascent through forest

Lac Roumassot

Lac du Miey

Lac Gentau and View of Pic du Midi d'Ossau

Ossau Valley

Lake Bious Artigues

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