Patagonia Trekking Guide: Torres del Paine W Circuit

The W Circuit in Torres del Paine National Park is, for my money, the most rewarding five-day trek on earth. It threads past three granite massifs — the Torres, the Cuernos, and the Paine Grande — and the scenery recalibrates somewhere around the second hour, after which "spectacular" becomes your new baseline.

What Is the W Circuit?

The W is a roughly 80-kilometer route shaped (yes) like a W, connecting three major valleys: Ascencio (the Towers), Francés (the French Valley), and Grey (Grey Glacier). It can be hiked in either direction, west-to-east or east-to-west. Most independent trekkers take four to five days.

W vs. O Circuit

The O Circuit adds a remote backside loop to the W, taking 7–9 days. It requires permits that sell out months ahead. If you're reading this guide, the W is almost certainly what you want — it hits the highlights without the logistical headache.

Planning and Permits

Torres del Paine requires an entry ticket from CONAF (the park service) booked in advance online. The campsites are split between CONAF (free, but reserve ahead) and private operators (Vertice and Las Torres Reserve), which charge per night.

Book everything — park entry and every campsite — two to three months before your trek. Walking in without reservations is no longer reliable.

Which Direction?

I recommend west-to-east (starting at Refugio Grey), saving the iconic Towers sunrise for your final morning. It builds the trek toward its climax and puts the wind at your back on the exposed sections.

The Route, Day by Day

Day 1: Pudeto to Refugio Grey

Take the catamaran across Lago Pehoé to Pudeto, then hike north along Lago Grey to Refugio Grey. The trail offers your first views of Grey Glacier, a wall of blue ice flowing from the Southern Patagonian Ice Field. Distance: ~11 km.

Day 2: Grey to Paine Grande to Francés Valley

Hike back south to Paine Grande, then north into the Francés Valley. The valley narrows between walls of black granite, and you reach a viewpoint ringed by hanging glaciers that calve with shotgun cracks. Return to Paine Grande or continue to Los Cuernos. Distance: ~20 km.

Day 3: To Los Cuernos

A gentler day hugging the shore of Lago Nordenskjöld beneath the Cuernos del Paine — twisted spires of grey granite capped with black sedimentary rock. Distance: ~11 km.

Day 4: Los Cuernos to Chileno

Climb up and over toward the Ascencio Valley, finishing at Campamento Chileno, where you'll sleep early for the pre-dawn summit push. Distance: ~15 km.

Day 5: The Towers at Sunrise

Wake at 4:00 a.m. and climb the final moraine by headlamp. The three Torres del Paine — 2,500-meter granite towers — catch the first light in a slow burn from grey to amber to blazing orange. It lasts perhaps three minutes. Then it is over, and you hike down and out.

The mountains do not care that you came. That is precisely why standing beneath them matters.

The Essential Packing List

# Torres del Paine W Circuit — Packing List
# Weather can swing from sun to snow in an hour. Layer for it.

# Base layer
- Merino wool t-shirt (2)
- Merino long-sleeve top
- Merino bottoms

# Insulation
- Fleece mid-layer
- Light puffy jacket (down or synthetic)
- Waterproof hard shell jacket
- Waterproof shell pants

# Lower body
- Trekking pants (quick-dry)
- Rain pants

# Feet
- Broken-in waterproof hiking boots
- Camp shoes (sandals or sneakers)
- Merino socks (4 pairs)

# Gear
- 50-65L backpack with rain cover
- 3-season sleeping bag (rated to -5°C / 23°F)
- Sleeping pad
- Headlamp + spare batteries
- Trekking poles
- 2L water capacity (lake water is drinkable)
- Sunscreen + sunglasses (UV is fierce)
- Dry bags for electronics

# Food
- 5 days of lunches/snacks (buy in Puerto Natales)
- Most campsites sell hot meals if booked in advance

Weather and When to Go

Patagonian weather is legendarily fickle. "Four seasons in a day" is not a joke here — it is a conservative estimate. Wind is the constant; gusts of 80 km/h are routine on exposed ridges.

The trekking season runs November to March (Southern Hemisphere summer). January and February offer the longest daylight and warmest temps but the most crowds. November and March are quieter and colder. I went in late February and had one day of perfect sun and one day of sideways sleet. Pack for both.

A Final Word

The W Circuit is not technically difficult — there's no scrambling, no glacier travel, no altitude. The challenge is endurance and weather. Train your legs, respect the wind, and the park will give you back something rare: five days where the only thing that matters is the next ridge, the next valley, the next impossible view.