Now this is an amazing route!
A couple of kilometres from Thones is a turn up a very steep, quiet road to the little-known Col de Plan Bois (not in my cycling bible).
A book that I would have liked to have written.
Here is a comprehensive map of almost a 100 road bike cycling climbs all across Switzerland.
Hopefully to help me plan some trips. 🙂
I had previously thought that Col du Tourmalet (2115 metres) was the highest paved mountain pass in the French Pyrenées, but in fact it is Port de Boucharo (2270 metres).