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4 Route MTB


Bossòst | Bordes Sapòda | Portilhon | Camin Vielh | Bossòst

Technical data

Diffficulty: Very Difficult

Distance: 18.5 km

Time: 4h

Elevation: +700

Spring, Summer and Autumn

Asphalt: 28%, Earth 50%, Path 22%


Challenging trail both technically and physically.

Start out at the tourist information office and climb up the Portilhon road for 4.7 km. Then take a track to the right that continues to ascend, commanding superb views of this part of the Lower Aran. A flat section will then lead to Coll del Portilhon at km 14.5. This is the start of a spectacular descent combining forest roads and then historical stone paths that pass by Aran Park and the Sant Antoni chapel, and after crossing the N-141 road three times (the initial ascent) you’ll reach the village of Bossòst.

Very steep downhill for descent lovers, combining fast sections with more technical cobbled stretches. Careful at the junctions with the road.

Bossòst, on the banks of the Garonne, is a very interesting village to visit, both for its shopping and its cultural wealth. The parish church of Mair de Diu dera Purificacion is one of the finest examples of Lombard Romanesque in the Aran region. The signposted ‘route of the 6 pilgrimage chapels’ surrounding the village is a very pleasant way of seeing the centre. Along the route you will go past Aran Park, where you can stop off and visit one of the best fauna centres in the Pyrenees.