Torres del Paine — Trekking the Towers — Full Guide (Chile)

Overview

Torres del Paine is the crown jewel of Chilean Patagonia — a 2,000 km² national park of granite towers, hanging glaciers and turquoise lakes, home to guanacos, pumas and condors. The three towers that give the park its name are the most photographed mountains in South America, and the treks around them are the reason most travelers come to Chile's south.

The two classic treks are the W — four or five days along the park's southern valley — and the full O Circuit, which adds the wild northern edge for eight to nine days. Both share the highlights: the Base de las Torres viewpoint, Glacier Grey, the French Valley and the Cuernos massif. Book accommodation months ahead in the high season, and buy park entry online in advance.

The W Trek (4–5 days)

The W traces the letter across the park's southern half, linking the three great sights of the park. It is well-marked and has solid infrastructure (refugios, domes and campsites), which makes it the perfect first multi-day trek for hikers without much backcountry experience.

• Day 1–2: Base de las Torres — from Hotel Las Torres, the classic climb to the tower's base, finishing on a moraine above a glacial lake.
• Day 3: French Valley — the day hike through the valley of the Cuernos, with the hanging glaciers of the French Glacier above.
• Day 4–5: Glacier Grey — the walk along the western shore of Lago Grey to the immense glacier face, with the option to add a boat trip or ice trekking.

Trekkers can walk west-to-east or east-to-west; the classic direction runs from the Refugio Paine Grande side. Each night you sleep in refugios (dorm beds), domes or campsites — you can carry a tent to keep costs down, or book full-service refugio nights.

The O Circuit (8–9 days)

The O adds the wilder, quieter northern section of the park — the backside of the massif, with views over the Southern Patagonian Ice Field. It is capped at around 70 trekkers per day, so it feels like the W never does: empty valleys, glacial rivers and the famous Paso John Gardner pass, where the ice field opens up below you. Technically similar to the W but longer and more remote; the same booking rules apply, and campsites must be reserved in advance.

Day hikes without the tent

Not everyone comes for a multi-day trek. The park's road reaches its eastern and western shores, and from Puerto Natales you can do the iconic day hikes in and out:

• Mirador Base las Torres — the 20 km round-trip up to the towers' viewpoint (7–10 hours). The reward is the most famous view in Chile.
• Grey Glacier viewpoint — the walk from Refugio Grey to the glacier's western face, or a boat trip among the icebergs.
• Lago Sarmiento circuit — flat lakeside walking near the entrance, excellent for birdlife and guanaco spotting.

Ice trekking on Glacier Grey

Companies run ice treks with crampons and ropes on the lower section of Glacier Grey — a half-day or full-day experience that is the park's most thrilling optional activity. The ice is deep blue, riddled with crevasses and meltwater caves. Book in Puerto Natales or at the refugio a day ahead.

Practical tips

• Buy park entry online at pasesparques.cl in advance — gates get busy in summer and the QR code needs no signal to display.
• Book refugios and campsites months ahead for December–February; the park fills up weeks before.
• Weather changes in minutes: pack for sun, wind and rain every single day, and always carry the waterproof layer.
• The wind is no joke — gusts over 100 km/h close trails. Check conditions at the ranger stations each morning.
• Fire is strictly forbidden in the park, including cigarettes; fines reach a million pesos.
• Carry enough cash for the park itself — most refugios take cards, but the catamaran crossings and some campsites prefer cash.
• Start the Base de las Torres hike before 07:00 in summer to avoid the wind and the crowds.