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A66 autoroute
L'Ariégeoise

Route information
Length	38.2 km (23.7 mi)
Location
Country	France

Highway system
Roads in France Autoroutes Routes nationales

The A66 autoroute is a 38.2 kilometres (23.7 mi) long motorway in the south of France, also called L'Ariégeoise.

It is in the departments of the Haute-Garonne and Ariège, and connects Villefranche-de-Lauragais with a junction to the A61 at its north and ends at the N20 at Pamiers to the south. It is operated by the company ASF, and it was finished in early 2002. It forms part of a larger European route which connects Paris, Orléans, Limoges, Toulouse, and Barcelona.

The road provides access to the Midi-Pyrénées towards the Principality of Andorra, and the junctions between Ariégeois and Toulouse.