The Col du Portillon is situated in Catalonia.
Starting from Bossost,
the Col du Portillon ascent is 8.6 km long. Over this distance, you climb 583 heightmeters.
The average percentage thus is 6.8 %.
Look for other sides to climb the Col du Portillon.
Since 2005, the Col du Portillon will be/was climbed in the following big tour stages:
Tour de France 2014 : Saint-Gaudens - Pla d'Adet on 23/07/2014
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