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The Aguja Guillaumet guided alpine climbing

Aguja Guillaumet, El Chalten
The Aguja Guillaumet guided alpine climbing
The Aguja Guillaumet guided alpine climbing
The Aguja Guillaumet guided alpine climbing

As a certified UIAGM-IFMGA local guide, Merlin knows the area better than anyone. That's why he'll make you enjoy a great 3-day mountaineering trip up to the Aguja Guillaumet summit. A real challenge for advanced climbers. Are you coming?


3 Days

Jan - May, Nov, Dec


The Aguja Guillaumet (in English, Guillaumet Needle) is located on the Fitz Roy Cordon. Although it is one of the most accessible climbing areas, this guided ascent is only suitable for sustained climbers.

In fact, you will need a very good physical training and a vast experience in multi-pitch rock climbing as well as ice climbing. The round trip will take between 14 and 16 hours. Moreover, the altitude change will be around 1.000 meters.

This alpine climbing I am proposing today consists in 3 challenging days starting from El Chaltén. Please find here below the day-by-day program.

itinerary of the aguja guillaumet

Day 1

A transfer will take us from El Chaltén to the Eléctrico River, where we will start the hike approaching progressively to “Piedra del Fraile”. After 5 or 6 hours will reach our campsite, the Piedra Negra bivouac at 1.600 meters of altitude. During this day you will find steep terrains with some scree in the last section of the trail.

Day 2

Today is the most important day: our summit attempt! Therefore, we will get up early (around 2 a.m.). First, and after a light breakfast, we start the hike in direction to the “Paso Guillaumet” (2.000 meters above sea level), along a small glacier while finding mixture of rocky and snowy terrains.

Then, once in that high pass, we’ll take the famous “Amy route”. It is the trail laying on the East face of the Aguja Guillaumet. Its slopes have an average inclination of 50°- 60°. The route continues with 4 rock climbing pitches (class IV and V, intermediate-sustained level). Finally, the trail ends with an ice ramp leading to the summit (2.574 meters of altitude). We did it!!!

For the return, we will descend by rappelling down to the beginning of the Amy Route. From there, we will hike down to the Piedra Negra bivouac again. Here we will spend the last night.

Day 3

Final day in which we’ll hike back to the bridge of the Eléctrico River. There, a transfer will be waiting to take us to El Chaltén. Ending of the program.

For your information, you can choose an alternative route called “Fonrouge Ridge”. Ask me more details if you have interest in that one!

If you have more doubts or want to know next departures and booking process, please contact me now. I am waiting your message eager to guide you in this alpine climbing!

Price includes

- Guiding fee

- Transport during the trip

About the guide

Guide profile image




Mountain Guide

Certified UIAGM-IFMGA Mountain Guide from Argentina.

I live in El Chaltén since 1998. I'm originally from Bariloche and I started with mountain activities when I was 15 years old. I've done climbing and ascents in many mountains of Patagonia, Perú, Bolivia, United States and Europe; such as Fitz Roy, Cerro Torre, Alpamayo, El Capitán, Mont Blanc and Aconcagua among others. I'm also a Ski Instructor and I am passionate for backcountry ski.

I speak fluent English, Italian and French and have been leading trips and expeditions for more than 20 years. I work together with a group of guides, so if I'm not available for the trip you request, one of my colleagues will guide you!



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What people are saying about this trip



Aguja Guillaumet con Merlin escalada montañismo en la Patagonia fue una experiencia magnífica. Merlin era flexible con las fechas y se aseguró de que tenía la ventana óptima para la excursión de tiempo de 3 días. Se ocupó de todos los detalles del viaje y estaba muy bien informado sobre la región y la ruta. Me impresionó especialmente la comida para la excursión que organizó y siempre estábamos bien alimentados. Yo recomendaría un viaje de escalada alpina con el montañismo Patagonia, sé que regresaré.



We went with Merlin to attempt to scale Guillaumet. Merlin was a great guide and was super flexible. We didn't make it to the summit because of weather, and so he took us rock climbing around el chalten instead. If I went back, I'd definitely go with him again.



Awesome three-day climb of the Aguya de Guillaumet, challenging but incredibly rewarding, especially due to the exceptional views from the top (Fitzroy seemed to be within touching distance!) Thanks for such an excellent trip Merlin, will remember it for ages!



Me and my friend spent 3 days with Merlin and had a fantastic time in Chalten area. He's very a very experienced fully certified guide, very strong, flexible and has excellent English. We were lucky with the weather (which can be very unpredictable) and climb Aguja Guillaumet along Fonrouge route. Highly recommended.

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