Climb one of the Haute Route vEVERESTING Challenge.
This northern approach from Valloire is the climb most people have in mind when talking about Col du Galibier. It's the tougher, longer and more popular ascent, regularly featuring in Tour de France and climbed annually by the riders taking part in the La Marmotte Gran Fondo cycling sportive. A great ride to warm up your legs for the challenge ahead.