Stage 11 is a mountain stage with five categorized climbs: the Col du Tourmalet (Hors catégorie) with an ascent of 7.7% over 18.4 km, the Col d'Aspin (Category 1) with an ascent of 5.2% over 12.3 km, the Col de Peyresourde (Category 1) with an ascent of 7.1% over 9.5 km, the Col du Portillon (Category 1) with an ascent of 8.4% over 7.9 km, and the Pla-de-Beret (Category 1 in Spain) with an ascent of 5.4% over 13.5 km. It begins at Tarbes at 325 m and ends at Val d'Aran at 1830 m.