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Portillón Pass – Bossòst loop from Arres

Routes

Mountain biking trails

Portillón Pass – Bossòst loop from Arres

Hard

riders

Portillón Pass – Bossòst loop from Arres

08:04

79.1km

2,680m

Mountain biking

Hard mountain bike ride. Very good fitness required. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: May 11, 2026

Tips

Includes a very steep uphill segment

You may need to push your bike.

After 62.6 km for 1.76 km

Waypoints

Start point

Bus stop

Get Directions

8.37 km

Church of the Rosary (Iglesia del Rosario), Aubert

Highlight • Religious Site

This Romanesque-style building —in Aranès, Mare de Diu deth Rosèr d'Aubèrt— is located in the municipality of Aubert, in Vielha. Although it was built around the 12th century, it has undergone several renovations over the years. The most representative is the octagonal bell tower.

Translated by Google •

Tip by

12.7 km

Church of San Martí de Gausach

Highlight • Religious Site

Very close to Vielha, we visited the Church of Sant Martí de Gausach, located in the municipality of Vielha and Medio Arán.
It is the parish church of the town, in the Gothic style and with some Romanesque elements.

Translated by Google •

Tip by

28.7 km

View of Vilamòs and Hermitage of Santa Miquéu

Highlight • Viewpoint

Great walk accessible to everyone, magnificent panorama

Translated by Google •

Tip by

29.8 km

Church of Santa Maria de Vilamòs

Highlight • Religious Site

It is located in the highest part of the town, so we can see the Maladetas massif from this point. As a curiosity, we can say that together with the Bossòst church, they are the only ones that preserve the only two Romanesque bell towers in the Arán Valley. We can also take a walk around this beautiful little town, surrounded by nature.

Translated by Google •

Tip by

32.1 km

Sant Joan Baptista Church

Highlight • Religious Site

Beautiful views of the church of Sant Joan Baptista, which was built halfway between the two towns of Arres de Jos and Arres de Sus. In the previous part, it has a small cemetery.

Translated by Google •

Tip by

46.1 km

Tuc de la Clota Trail

Highlight (Segment) • Trail

Nice track to climb to the Portillon in Gravel/MTB mode. The part that goes over the pass remains quite flat for a while before actually starting the descent to Bossost. So, it's a nice spot to come and ride in the quiet mountains in family mode with children who are new to mountain biking, for example.

Translated by Google •

Tip by

62.3 km

Viewpoint

69.3 km

Portillón Pass

Highlight • Mountain Pass

The Col du Portillón is a short but intense mountain pass that connects the Aran Valley to France via a narrow, shady road through forests. Its ascent, with its pleasant slopes, is highly appreciated by local and professional cyclists.

Translated by Google •

Tip by

73.7 km

Bossòst

Highlight • Settlement

Really nice small town that has plenty of resupply options and some hotels to sleep in.

Tip by

77.2 km

Pas deth Lop

Mountain Pass

79.1 km

End point

Bus stop

Way Types & Surfaces

Way Types

35.1 km

27.6 km

10.3 km

4.50 km

1.67 km

Surfaces

33.3 km

20.4 km

17.3 km

7.68 km

464 m

Elevation

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

Highest point (1,380 m)

Lowest point (710 m)

Weather

Sunday 17 May

12°C

4°C

45 %

Additional weather tips

Max wind speed: 7.0 km/h

to get more detailed weather forecasts along your route

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

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Portillón Pass – Bossòst loop from Arres

Church of the Rosary (Iglesia del Rosario), Aubert

Church of San Martí de Gausach

View of Vilamòs and Hermitage of Santa Miquéu

Church of Santa Maria de Vilamòs

Sant Joan Baptista Church

Tuc de la Clota Trail

Portillón Pass

Bossòst

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