The route explained
The three arms of the W Trek, explained
Base of the Towers, French Valley and Grey Glacier — what each arm actually delivers.
Why it's called the W
Traced on a map, the classic route zigzags up into three valleys and back down between them, drawing a rough W shape across the southern face of the Paine massif. Each of the three 'arms' climbs to a signature payoff, linked by lower traverses where the refugios sit.
Base of the Towers — the icon
The eastern arm climbs to the Mirador Las Torres, where the three sheer granite towers rise above a glacial lake. It's the park's defining image and, for many, the reason to do the trek — hikers often set out before dawn to catch the towers lit red at sunrise. The final approach is a steep, boulder-strewn climb.
French Valley — the amphitheatre
The central arm ascends the Valle del Francés between the hanging Francés glacier and, higher up, the Mirador Británico — a natural amphitheatre ringed by jagged peaks. It's a long day into the heart of the massif and back, and many rate the upper viewpoint the most spectacular panorama on the whole route.
Grey Glacier — the ice
The western arm follows Lago Grey to views of Grey Glacier, a vast tongue of ice flowing off the Southern Patagonian Ice Field, with icebergs drifting on the lake. The trail is more undulating than steep, but it runs along an exposed shore where the Patagonian wind is often at its most relentless.
Which direction to walk it
The W is typically walked west-to-east (Grey first, towers last) or east-to-west (towers first). West-to-east builds to the iconic towers as a finale; east-to-west gets the marquee view early in case weather closes in later. Either way, the direction you choose shapes which refugios you need — which loops straight back to the two-operator booking puzzle.
Still deciding W Trek vs day tour, or which month?
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