If you look at a map of the region, it looks unclear how you would possibly get from Chamonix to Zermatt easily. The Walker’s Haute Route works its way through a complex mass of mountains passable only via high mountain cols and connecting valleys. Traditionally, the trek starts in the Chamonix Valley and moves south eastwards via Argentiere and then over the French-Swiss border to Trient, and follows the same route as the Tour du Mont Blanc as far as Champex-Lac.
Here, the route splits and the Haute Route heads away from the Mont Blanc massif towards Chable and once up and above Verbier, the route stays high for two days passing numerous cols before descending to Arolla.