Have you ridden from up from B d'O? I know it's not as steep, but I wouldn't fancy slogging up there with all the truck traffic. Just the stretch to B d'O from Grenoble was enough for me. I also hate unlit tunnels.
I reckon that Galibier may be a tiny bit harder - but it depends on the weather. Both times up Galibier I had fantastic weather. Riding up to Col de Tempetes from Chalet Reynard into a 50k headwind was no joke.
Have you ridden from up from B d'O? I know it's not as steep, but I wouldn't fancy slogging up there with all the truck traffic. Just the stretch to B d'O from Grenoble was enough for me. I also hate unlit tunnels.
I reckon that Galibier may be a tiny bit harder - but it depends on the weather. Both times up Galibier I had fantastic weather. Riding up to Col de Tempetes from Chalet Reynard into a 50k headwind was no joke.