The Tour du Mont Blanc or TMB is one of the most popular long-distance walks in Europe.

[1] It is also the route of an annual ultramarathon, the Ultra-Trail du Mont-Blanc, which covers the entire distance at once with a time limit of 46 hours and 30 minutes.

[1] The highest points on any variant of the trail are the Col des Fours in France and the Fenêtre d'Arpette in Switzerland, both at an altitude of 2,665 m (8,743 ft).

[1] Plentiful accommodation exists along the entire route, allowing it to be broken into segments to suit any fit person.

[1] Despite the abundance of choice, the popularity of the trail can lead to problems finding accommodation, even if booking in advance.