
Let the action begin. Weather over Alpe d'Huez:
All the Mountain Passes and hills:
Km 13.0 - Col de Manse 6.6 kilometre-long climb at 6.2% - category 2
Km 45.0 - Rampe du Motty 2.4 kilometre-long climb at 8% - category 3
Km 95.0 - Col d'Ornon (1 371 m)5.1 kilometre-long climb at 6.7% - category 2
Km 122.5 - Alpe d'Huez 12,3 kilometre-long climb at 8.4% - category H
Km 131.5 - Col de Sarenne 3 kilometre-long climb at 7.8% - category 2
Km 172.5 - Alpe d'Huez 13,8 kilometre-long climb at 8.1% - category H
To help understand the climbing and descending routes:
1st: La Bourg D'Oisans - Alpe D'Huez - Col de Sarenne
2nd: Col de Sarenne descent
Final Climb: La Bourg D'Oisans - Alpe D'Huez (different, higher location than first ascent)
Riders come from the south (Gap) and reach the Alpe D'Huez Valley just after the descent from Col D'Ornon. They then initiate the first climb from La Bourg D'Oisans (base) to Alpe D'huez. After reaching the resort, they turn right to Col de Sarenne, before descending to Mizoen, back to La Bourg D'Oisans. They now initiate the last climb, this time ending a little higher onto the finish line, located in the very top.
The climb up Alpe d'Huez is 13.8 km with an average gradient of 8.1% (1130 m) with 21 switchbacks marked with signs honoring each of the Tour de France/Alpe d'Huez stage winners. Since the Tour has now used Alpe d'Huez more than 21 times, the lower signs have been doubled up as you'll notice on the first bend with a double panel honoring both Fausto Coppi and Lance Armstrong
The 21 bends
Videos
Alpe D'Huez Climb - edited
- Climb (last km's)
Alpe D'Huez descent
Col de Sarenne suicide descent (thanks Bavarianrider and Frank Tuesday)
Profile:

First Passage (Alpe - Col de Sarenne):

Last Climb to Alpe:
