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The Tour du Mont Blanc is a 169 km / 105 m circular mountain route around the Mont Blanc massif in the Alps. It’s one of the most popular treks of its kind or any kind. It goes across borders between France, Italy and Switzerland and it takes about a week to complete for an average hiker.

I haven’t hiked the TMB except for a 43 km section where it meets the GR5 trail in the French trail system, which I hiked in 2009.