Port d'eth Portilhon (Catalonia)

Start Town Altitude (m) Elevation Gain (m) Length (km) Gradient (%) Difficulty Rating
Bossost 1293 583 8.5 6.9 524 ***

Col du Portillon - Bossost
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Roads & Traffic

The road surface is in good condition throughout.

The climb itself does not have a lot of traffic, although expect to be passed by a car every few minutes. However, the N-230 at the foot of the climb is a very busy road and not good for cycling. This makes it problematic to access the start of the climb by bike.

Climb Description

Col du Portillon

Port d'eth Portilhon is a climb in the Pyrenees which finishes at a border crossing between France and Spain. The ascent from Bossost takes place in the Catalonia region of Spain and has reasonably challenging gradients, but nothing that would really trouble an experienced cyclist.

The scenery here is quite typical of the nearby Ariege Pyrenees region. It is largely forested and, although the scenery is pleasant, there are few spectacular views - even at the top of the climb.

Port d'eth Portilhon has been used in both the Tour de France and the Vuelta a España, although never as a stage finish. Riders leading the race over the col have included Joaquim Rodríguez and Richard Virenque.

Port d'eth Portilhon is open throughout the year subject to weather. Short term closures are possible in winter, but the relatively low altitiude of the climb means that it often stays open even during the coldest months.

Other sides

Port d'eth Portilhon can also be climbed from the French side, where it is known as the Col du Portillon.

Nearby Climbs

La Bonaigua
Pla de Beret
Port de Bales
Col de Mente


The Col du Portillon from the French side is available as a route extension on our Best Of The Pyrenees cycling holiday.