This climb starts just outside Bourg-Saint-Maurice but takes a right turn before entering the village and quickly climbs fairly steady for the first 5km, going from local farmland into a shaded forest. Then you can expect 6km of quite hard effort before clearing the tree line and hitting a 3km long stretch of high alpine valley where you can grab some needed rest. The final 6km is fairly sustained climbing with some steep sections that hit double digits. You're now in open alpine pasture terrain with some views of the distant Mont Blanc that?s almost the only mountain with some snow this late summer. The final descent down to Lac de Roselend is well worth doing and will get you those awesome views that you missed if you climbed from the other side in Beaufort. The southern side of this massive climb can also be climbed in the Tacx collection via the second stage Col du Pr? - Roselend. Workout tip - This climb has a fairly clearly defined 5km long warm up with two lengthy steeper parts. It?s also very long at 20km. Two hard tempo sessions with a 3km rest in that alpine valley at the midway point could be an idea.