The A63 autoroute is a motorway in southwest France, connecting Bordeaux to the border with Spain and Basque Country via the Autopista AP-8. The motorway, rather than being a purpose-built route, is an upgrade of the former RN10, which became a full toll road and no longer exists south of Bordeaux. The motorway crosses Les Landes (moorland) as a dual-carriageway.

The Autopista AP-8 is a toll autopista in the north of Spain, crossing the Basque Country from east to west. It is known as the Autopista del Cantábrico and connects the French border with Bilbao via San Sebastián, Zarautz, Eibar and Durango. At Bilbao the AP-8 continues as the toll-free Autovía A-8, which runs along the Spanish northern coast to Gijón and eventually the region of Galicia.