Col d'Agnes is a great climb which has been criminally underused by the Tour de France. It has appeared just five times in the race and only twice from Aulus-les-Bains - the significantly more challenging side. Riders to crest the Agnes first have inlcuded Marco Pantani and Michael Rasmussen - showing that it is an ascent for those receiving a bit of assistance pure climbers.
Col d'Agnes - particularly when tackled from this side, starting in Aulus-les-Bains, is one of the most scenic climbs in the Ariège Pyrenees. The lower part is in forest, but the switchbacks towards the top offer fantastic views over to the high mountains that form the borders with Andorra and Spain. The Agnes is a great climb to include in a longer route, combining it with, for example, Col de Latrappe, Col de Port or Col de la Core.
Col d'Agnes is open throughout much of the year, subject to weather, but be aware that short term closures are common in winter.
This sign in Aulus marks the challenging start of the climb
Roads & Traffic
The road surface is in good condition.
There is little traffic on the climb.
There are great views throughout much of the climb
Alternative Routes
Col d'Agnes can also be climbed starting from Massat. This is a longer and more gentle ascent.
France
Spain