Col d'Aubisque, Mountain pass in Béost, France

Col d'Aubisque is a road pass in the Pyrenees at 1,709 m, on the northern slopes of the Pic de Ger (2,613 m), in the commune of Béost. The D 918 crosses it, linking Laruns and the Ossau valley with Argelès-Gazost via the Col du Soulor, and runs along the Cirque du Litor with two short tunnels. A low stone wall borders the road in places.

The mountain road was built in the 19th century at the request of Empress Eugénie to connect the spa towns of Eaux-Bonnes and Argelès-Gazost. This route became a key link between the region's thermal centers.

The pass is marked by a stele to André Bach (1888–1945), president of the Cyclo Club of Béarn, who lost his left arm in 1916 and died in deportation in 1945; it was inaugurated on 26 September 1948 and hosts a memorial ride each year. Giant bicycles painted in Tour de France colours, one yellow, one white with red polka dots and one green, stand near the summit.

The pass is generally closed to traffic from early December to early May; the eastern descent toward the Col du Soulor is the stretch most often buried by avalanches. The D 918 crosses the Cirque du Litor through two short, narrow tunnels. From the summit, a broad ridge path leads on foot to the Soum de Grum (1,870 m).

The climb from Laruns is one of Europe's most famous cycling challenges and regularly features in the Tour de France. The combination of distance and gradient creates a demanding ascent that attracts cyclists from around the world.