KM 0 : Foot of the climb
The foot is quite tough as the slope is constantly between 8% and 10% on the first 2,5 km (1,5 miles).
KM 1,6 (1st mile) : Steepest part
Here is the steepest part of the climb, the slope reaches 11,6% for 200m (220 yards) !
KM 2,5 (1,5 mi) : the slope gets easier
After that tough start, the slope gets easier for 1 kilometer (0,6 miles) and it remains around 5%.
KM 3,2 (2 mi) : Return of the steep parts
After that bend, the road gets steep again and it remains around 8% and 10% for about 2,5 km (1,5 mi)
KM 5,8 (3,6 mi) : Final stretch
After a series of 6 hairpins, the road gets slighly easier (5%) for 1km (0,6 mi), and then it gets steep again (9,8%) until the entry in Bonascre.
KM 7,8 (4,8 mi) : Bonascre
At the end of the first bend in Bonascre, you have 2 choices : you can go on for 200m (220 yards) on the departmental road until the foot of the ski slopes of Ax-3-Domaines. Or you can act as a rider of the Tour de France and take on the right the "Rue des Chalets" (Chalet's Street) for 1km (0,6 mi). This will lead you to the telecabin station where you can still cross the finish line of the Tour de France !