Soum Lake – Pont d'Arrens-Marsous loop from Arrens-Marsous

Routes

Running trails & routes

Soum Lake – Pont d'Arrens-Marsous loop from Arrens-Marsous

Hard

5.0

(1)

137

runners

Soum Lake – Pont d'Arrens-Marsous loop from Arrens-Marsous

04:28

24.4km

1,780m

Running

Hard run. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required. The starting point of the route is right next to a parking lot.

Last updated: August 15, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Parc national des Pyrénées (Aire d'adhésion)

Waypoints

Start point

Parking

Get Directions

7.02 km

Cantau Hut

Highlight • Mountain Hut

Access from the Col du Soulor: go to Lac de Soum then follow the GRP Tour du Val d'Azun by the crest of the Serre. A magnificent and not too technical tour!

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8.09 km

Soum Lake

Highlight • Lake

small lake that can be reached via good slopes.

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19.0 km

Superb views over the valley

Highlight • Other

Since the GR 10 from Arrens-Marsous to Lac d'estaing runs a lot on the road, this variant "GRP Tour du Val d'Azun" over the slightly higher pass is much nicer.

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23.2 km

Pont d'Arrens-Marsous

Highlight • Bridge

The Arrens-Marsous bridge spans the Gave d'Arrens. This is the name given to the upper part of the Gave d'Azun. The term “gave” designates watercourses in Pyrenean toponymy. This small …

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23.9 km

Arens-Marsous Village

Highlight • Settlement

A good base for mountain bike tours through the Val d'Azun, as there are several parking areas. A pump track has also been built on the edge of the village.

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24.4 km

End point

Parking

Way Types & Surfaces

Way Types