Trekking the W in Torres del Paine, Patagonia: A Practical Guide

The W Trek in Torres del Paine National Park is one of the great short treks in the world — roughly 80 kilometres over 4 to 5 days, tracing a W between three of Patagonia’s most dramatic landscapes: the blue wall of Grey Glacier, the hanging glaciers of the French Valley, and the granite towers of Base Torres. It is not high — nothing here exceeds about 1,100 metres — but it is ferocious in a different way: the wind of Patagonia, which has ended more itineraries than any pass or summit. Plan around the weather and the booking system, and this is the trek that ruins every other trek for you, in the best way.

The route: Grey, French Valley, Base Torres

The classic direction starts west at Paine Grande, reached by catamaran across Lago Pehoé from Pudeto. Day one (or a branch of it) walks to the Grey Glacier viewpoint, with its famous suspension bridges and icebergs calving into the lake. Back at Paine Grande, the route turns east along the north shore of Lago Skottsberg into the French Valley — a spectacular dead-end up to Mirador Británico, a natural amphitheatre of granite and hanging glaciers. Continuing east past the Cuernos del Paine (the ‘horns’), the route climbs to Chileno or Central and finishes with the pre-dawn walk to Base Torres, where the three granite towers catch the sunrise. Cumulative elevation gain across the trek is roughly 3,000–3,500 metres — significant, even at low altitude.

The two operators and the booking puzzle

This is the logistical heart of the W, and travelers consistently say it catches them out. Two companies run the refugios and campsites along the route: Vertice Patagonia (Grey, Paine Grande, Francés) and Las Torres Patagonia (Central, Chileno, Cuernos) — and you must book each night’s stop directly with the operator that runs it. There is no single trek permit, but park entrance is required, and a confirmed reservation at every refugio or campsite is required in advance: rangers reportedly turn walk-ins away.

Bookings typically open about 6 months ahead (roughly April–June for the October–April season), and peak-date refugio beds are reported to sell out within hours or days of release — especially January and February. This is the single most repeated piece of traveler advice on the W: book the moment reservations open.

Costs

• Park entry: roughly USD 35–50 depending on season.
• Refugio full board (bed + breakfast, dinner and packed lunch): typically ~USD 130–180 per night in peak; bed-only ~USD 40–105 depending on operator and room type.
• Camping: from ~USD 12–14/night at cheaper operators to ~USD 40–90/night near Las Torres; full gear rental (tent + bag + pad) roughly ~USD 88–270.
• Total benchmarks: budget self-supported camping trips are reported around ~USD 400–600; refugio-with-food trips commonly land ~USD 900–1,750+ for the five days.
• Transfers: buses Puerto Natales–Pudeto ~14,000–15,000 CLP one way; the Lago Pehoé catamaran ~35,000 CLP one way, cash only, not reservable — line up early in high season.

Getting there

Most trekkers stage from Puerto Natales, about 110 kilometres south of the park. Buses run to Pudeto (around 3 hours); from there the catamaran crosses Lago Pehoé to Paine Grande in about 30 minutes. Treks typically finish at the Hotel Las Torres/Central end, with a shuttle to Laguna Amarga and afternoon buses back to Puerto Natales. Build buffer days around the trek — weather delays and transport quirks are part of Patagonia.

Best season

November to March is the main season, with the park fully open roughly October to April. December–February brings the warmest weather and the longest days (up to ~17 hours of light) but also the biggest crowds and the strongest wind. March–April, autumn in Patagonia, is widely cited as the sweet spot: fewer people, autumn colors, calmer wind, but colder and more variable weather. October–November offers wildflowers and fewer hikers with strong winds and freezing nights. Winter (May–September) means snow and ice, some closed sections and facilities, and very few visitors — a specialist trip, not a standard trek.

Practical tips

• The wind is the whole story. Gusts reportedly exceeding 70 mph hit exposed sections; bring robust windproof layers, and secure everything — tents, pack covers, yourselves.
• Expect ‘four seasons in one day.’ Rain, sleet and even summer snow are possible; dress in layers and protect your sleeping kit.
• Camp only at established sites and never light fires — the fire ban follows a major past wildfire.
• Trails are well marked, but the suspension bridges and river crossings near Grey need care, especially in wind.
• Build in a buffer day. Weather can close or delay segments; the W rewards travelers who do not have to catch a bus.
• The refugios look reasonable until you add full board — price the whole trip, not just the bed, before choosing camping vs refugio.

The W is busier and pricier than many expect, and the wind will test you. But stand at Base Torres as the towers ignite at sunrise, or watch the French Valley’s glaciers glow at dusk, and you will understand why every traveler who has done it says the same thing: book early, respect the wind, and go.