The Peyresourde pass connects the Louron valley to the Larboust valley. Its summit marks the boundary between the departments of Hautes-Pyrénées and Haute-Garonne. During the ascent, you will see the villages of Vielle-Louron, Génos-Loudenvielle and its lake.
From Saint-Lary, ride to Loudenvielle via the Col d'Azet (20 km) or via Arreau (26 km). The climb starts at 935 m altitude and is relatively easy. After the summit, the route descends to Bagnères-de-Luchon for 13.3 km. This climb is a classic in the Tour de France, so much so that it has until now featured 65 times.
The 10.7 km climb starts at Loudenvielle at an altitude of 950 m heading to Armenteule then Estarvielle with a quite easy gradient of 6% on average and ending at 1,569m meaning a height gain of 789m. The climb will take about 1 hour 15 minutes.