Moderate
El Chaltén
Glaciar Huemul
Distance4km
Duration2h
Weather Permit
El Chaltén · Argentina
Laguna de los Tres
The classic Fitz Roy hike, ending at a glacial lagoon beneath the granite towers of the massif.
- Difficulty
- Hard
- Distance
- 19km
- Duration
- 8h
- Elevation gain
- +750m
- Max altitude
- 1,170m
- Route type
- Out & back
Laguna de los Tres is El Chaltén's signature day hike and one of the main viewpoints of Fitz Roy. The trail climbs through lenga beech forest and exposed moraine before a steep final ascent to the lagoon below the massif. On clear mornings, the granite towers can reflect in the turquoise water. Start before 7 a.m. to avoid the busiest hours and catch the early light. Weather windows can be brief, so check the forecast the evening before and turn back if conditions worsen.
About the hard grade: Full-day efforts, 800 m+ of gain. Steep, rough terrain, possible scrambles. Early starts and weather windows matter.
Conditions at the trailhead
NowAlerts
6°Overcast · feels 3°
Weather watch
Wind9 km/h
Gusts32 km/h
Rain100%
Humidity60%
Daylight11h 48m
Rise / Set07:52–19:40
7-day forecastWeather watch
Best window — today
10:00 – 14:00
Sheltered routes best
Weather via Open-Meteo · Updated 12:00 · Not safety advice
Shown for the trailhead — expect colder, windier conditions near the 1,170m high point.
Hike it right
Know before you go.
Patagonia rewards prepared hikers. A few specifics for this trail — so you, and the trail, both come back in good shape.
Weather-window route
In high wind or heavy rain, postpone. Check the forecast above before committing — the mountain will still be there tomorrow.
Visibility matters
The views are the point of this trail. In low cloud, save it for another day and pick a forest or lake walk instead.
Start before sunrise
First light on the peaks is what this trail is famous for. Start in the dark with a headlamp — it pays off.
Safety notes
The final ascent is steep, rocky, and exposed. Check the weather forecast and current trail conditions before setting out. Start early and plan to return in daylight. Turn back in strong winds, snow, ice, or poor visibility. Stay on the marked trail and do not depend on mobile coverage. Winter conditions can require crampons or other traction equipment.
What to pack
The Patagonia day-hike checklist — layers first, wind always.
For this trail: Wear sturdy waterproof hiking boots and layered clothing, including a warm layer and a waterproof, windproof shell. Bring trekking poles, sun protection, a headlamp, enough food and water, and a basic first-aid kit. Carry suitable traction equipment when winter conditions require it.
Patagonia can cycle through four seasons in one afternoon. Dress in layers you can add and shed fast — wind is the defining factor.
- Base layer — Synthetic or merino, never cotton — it must wick sweat and dry fast.
- Mid layer — Fleece or a light insulated jacket for breaks and summit wind-chill.
- Outer shell — Wind- and waterproof jacket. This is the one piece you should never skip.
- Hiking pants — Quick-dry. Add thermal tights underneath in shoulder season.
- Warm hat & gloves — Even in January — exposed ridges are cold when the wind picks up.
- Sun hat or cap — Patagonian UV is strong and shade is rare above the treeline.
- Spare merino socks — Wet feet end hikes. A dry pair weighs nothing.
Need the overnight kit? See the full Patagonia gear — buy & rent guide →
Getting to the trailhead
Trailhead at -49.3203, -72.8950 — most hikers base in El Chaltén.
04Hand it to a local
Plan your El Chaltén trip with a local expert.
Send your rough dates and what you want to do in El Chaltén. A local planner turns it into a realistic route, flags weather-risky days, and shows clear options before you commit.
- A route ordered around the weather, bus times, border crossings, and park rules
- Places to stay, guides, and transfers picked to fit your budget
- An itemized quote you can compare — and no obligation to book
Our local plannersLocal guides & trip planners
We read and answer every request personally — no bots, no call centers.
“The planner rebuilt our week around a storm window we had no idea was coming. We summited Laguna de los Tres in perfect light.”
“Every bus, border crossing, and refugio was sequenced for us. We just followed the plan and it worked.”
“Honest advice — they talked us out of an itinerary that would have been miserable in April and built a better one.”
Common questions
Before you hit the trail.
No permit required for Laguna de los Tres. Register at the trailhead ranger station on the day of your hike.