The opening stages of the Walker's Haute Route from Chamonix toward Zermatt. The full route is 180-209 km through the Pennine Alps. This segment shows the first stages through Argentière, over Col de Balme, and via Champex-Lac — overlapping with TMB stages before diverging southeast toward Verbier and the high passes.
Distance
26.9 km
Max elevation
2,665m (Fenêtre d'Arpette)
Duration
4–5 days (of 12–16 total to Zermatt)
Safety classification
DifficultyMountaineering
GuideGuide required (safety)
GearGlacier gear
OfficialNo
MaintainedNo
Season
Summer glacier raid: the Chamonix official listing runs it only mid-June to mid-July (15/06-15/07), daily, 'subject to favorable weather'; later in summer crevasses open. The ski version runs roughly January-April (zermatt.swiss) and demands full avalanche kit. There is no season in which this is a walking route, and no season in which unguided travel without glacier equipment is appropriate.
Hazards
▲Crevassed glacier travel from the first stages: Glacier du Tour and Col Superieur du Tour on day 2, then Trient and Otemma glaciers
▲High cols above 3,000 m — altitude and rapid weather deterioration; the itinerary is weather-window dependent
▲Avalanche risk and steep slopes requiring one-at-a-time passage (ski season, per zermatt.swiss)
▲Remote hut-to-hut terrain between Chamonix and Zermatt with no easy bail-outs
Classification ambiguity, flagged deliberately: guidebooks also describe a non-glacier 'Walker's Haute Route', but NO managing agency documents it — neither chamonix.com nor zermatt.swiss recognizes a walking variant. This classification covers the agency-documented glacier route, whose first stages reach crevassed glacier terrain on day 2. Both official bodies present it as guided-only in practice (Chamonix lists it solely as a Compagnie des Guides trip; Zermatt says never start without a guide), hence required-safety. If jtreks means the walker's variant, treat that as unverified — do not downgrade these fields from guidebook or operator sources.
Verified 2026-08-23Official source ↗Météo-France — Bulletin d'estimation du risque d'avalanche