For many walkers (some 30,000 each summer), Courmayeur's trophy hike is the Tour du Mont Blanc (TMB). This 169km trek cuts across Italy, France and Switzerland, stopping at nine villages en route. Snow makes it impassable for much of the year. The average duration is anything from one week to 12 days; smaller sections are also possible.
You can undertake the hike solo, but if you're unfamiliar with the area, hooking up with a local guide is a good idea as the route traverses glacial landscapes. Easy day hikes will take you along the TMB as far as the Rifugio Maison Vieille (6.6km, one hour and 50 minutes) and Rifugio Bertone (4.5km, two hours). Follow the yellow signposts from the Piazzale Monte Bianco in the centre of Courmayeur.