Climbing

This itinerary will help you to explore one of the most beautiful valleys of l’Oisans. However, on the first part of the tour, you will have to cycle through some tunnels which might give cause for concern, but thankfully they are all lit.
The first part of this route is a good stretch for training your legs before you start the gruesome climb up to the Col de Sarenne.
From Bourg-d’Oisans, follow the RN91 towards Briançon. Cross the Chambon barrage and turn left to Mizoen - Clavans. Then follow the D25a towards Clavans-le-Haut - Col de Sarenne.
From the pass, go back down to Alpe-d’Huez and then down the famous road of Alpe-d’Huez with its 21 hairpin bends (D221) down to Bourg-d’Oisans.
That little bit further
From here you have the option of completing itinerary no. 7 up to Besse-en-Oisans.
L’Oisans and its 6 valleys: Ferrand valley
This is the wildest of the six valleys. Ferrand stems from the Latin word
’ferus’ (=wild).
This is undoubtedly a reference to the wild nature of the torrent and in the background you can see the Col de Près Nouveaux which forms the border to Savoy over which persecuted Protestants fled to Italy after the revocation of the Edict of Nantes by Louis XIV. The ’Adret’ (South side) has been deforested so much that it has also been nicknamed ’l’Oisans chauve’ (the ’bare’ Oisans).
"I’d rather ride a bicycle than a horse. Its brakes are easier to control." Lambert Jeffries