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Trekking Crossing the Andes, Tunuyán, Cajón de los Arenales, refugio Real de la Cruz, Paso Portillo-Piuquenes, Santiago de Chile - Ascenso23
Trekking Crossing the Andes, Tunuyán, Cajón de los Arenales, refugio Real de la Cruz, Paso Portillo-Piuquenes, Santiago de Chile

Trekking Crossing the Andes, Tunuyán, Cajón de los Arenales, refugio Real de la Cruz, Paso Portillo-Piuquenes, Santiago de Chile

Start Date :
End Date:
Initial time :
alarm1 pm
End Time:
alarm9 am
Meeting Point:
Tunuyan, Mza, Santiago de Chile
End Point:
Santiago de Chile, Chile
1300 km from Buenos Aires
7 days
battery_charging_full18 available spots

Special price booking until 03 de June!message

Those extensive valleys , interrupted by some solitary mountain refuges. The towering rock walls. The irregular peaks by the white glaciers. Everything is still, as in a painting, being us the main characters of that painting.

The idea is to get into the mountain range, walking up a valley and crossing the Andes following the same path as one of the  General San Martin´s armies took more than 200 years ago....An experience that is not easily forgotten.



Expedition connecting Argentina with Chile. We will carry our backpacks. General equipment will be carried by carrier animals . Accommodation on wild camps and occasionally in mountain refuges  (without the comforts of a campsite) in the mountains.

Season 2021
  • January 10th to 16th
  • January 24th to 30th
  • February 7th to 13th
  • February 21st to 27th
  • March 7th to 13th



Day 1: Meeting and transfer from Mendoza´s city Bus Station at 10 a.m. It is a private transfer that we include in the program for those who are not already in Tunuyan. Backpack´s preparation, guide´s presentation  + general technical talk, lunch in Tunuyan and transfer to Portinari Refuge. Registration in Migrations  (you´ll need your passport for this moment). We start the first section on foot to Scaravelli refuge. The night finds us cooking a delicious meal, which we´ll savor under a starry sky.

  • Estimated walking time: 4-5 hours.
  • Distance: 8 Km.
  • Meters uphill: 600 mts in ascent.
  • Starting height: 2500 masl.
  • Camp Height: 3100 masl.

Day 2: Calm day of relax and acclimatization. Lunch. After noon We´ll walk 3 hours until the next camp, ascending gradually by the mountain range to Portillo Pass. Yaretas Camp

  • Estimated walking time: 3 hours.
  • Distance: 4 Km.
  • Meters uphill: 300 meters in ascent.
  • Start height: 3100 masl.
  • Camp Height: 3400 meters above sea level.

Day 3: Early breakfast to take advantage of the intense day: walk up to 4300 meters , border  El Portillo, from where the view is incredible: hills and glaciers over 6000 meters;  then down to another valley, still in Argentina territory. In the afternoon we descend in a very long stretch, through a valley, until finally reaching the camp next to a drinking water stream.

  • Estimated time of walk: 12 hours.
  • Distance: 18 Km.
  • Meters uphill: 900 mts in ascent / 1000 mts in descent
  • Starting height: 3400 masl.
  • Higher Point: 4300 masl
  • Camp Height : 3300 masl.

Day 4: Keep going down through the valley, first River crossing and reach the Rio Tupungato Valley; a second River crossing (this time with Horses help) and two more hours walking till Camp Real Del Alambre.

  • Estimated walking time: 6 hours.
  • Distance: 12 Km.
  • Meters uphill: 600 meters in descent / 200 meters in ascent.
  • Start height: 3400 meters above sea level.
  • Height of the camp: 3000 meters above sea level.

Day 5: We get up early to take advantage of the daylight. Our goal is to get closer to the International Border. We walk through a great and beautiful valley, step by step, until we reach  Real de las Ovejas, where we set up our last camp in the mountain.

  • Estimated walking time: 7 hours.
  • Distance: 12 Km.
  • Meters uphill: 300 meters in ascent.
  • Starting height: 3000 masl.
  • Height of the camp: 3300 meters above sea level.

Day 6: Key day, finally we cross to Chile. Just like every day, we start as early as possible. We continue climbing a couple of hours  to the border Paso Piuquenes. Photos, hugs and  celebration for the challenge achieved. Here we say goodbye to the animals and their baqueanos. From this point each one must carry their belongings plus some of the general equipment. Descent on the Chilean side, about 4 hours downhill. We reach the hot springs Posas del Yeso. 2-3pm approximate time of arrival. Lunch and final celebration. Transfer to the city of Santiago de Chile. Night at  hostel.

  • Estimated walking time: 8 hours.
  • Distance: 8 Km.
  • Meters uphill: 650 meters in ascent / 1250 meters in descent
  • Starting height: 3400 masl.
  • Heigher Point: 3950 masl.
  • Final height: 2700 meters above sea level.

Day 7: Breakfast. End of our services in Santiago de Chile. Ask for return options  to Argentina or extra nights of lodging in Chile.


Note 1: Active program with a high demand. It is a required to have walked at least once previously with a trekking backpack on an outing in mountain at least one day (8 hours). To have ever slept in a tent with a sleeping bag. Suitable for over 13s, and under 60s (cases outside these age ranges will be evaluated).

Note 2: All participants must present a physical/medical fitness certificate, where their GP will enable them to carry out the activity.

Note 3: People with physical ailments or leg injuries (classic case of knees or other joints) cannot participate. Carry out this activity with an injury can lead to having to evacuate the person in complex situations and significantly harm the group with important delays.

Note 4: Program subject to climatic, geographic or political conditions. Changes may occur during the trip depending on various circumstances and factors. Decisions will be exclusively made by the guides, baqueanos and company coordinators.


speaker_notesIncluded Services:

  • Transfer IN from Mendoza city, bus terminal, or from Tunuyan to  Portinari Refuge 
  • Transfer OUT from the Termas del Yeso to the city of Santiago de Chile.
  • Professional  mountain guides and baqueanos.
  • All meals in mountain(breakfasts, lunches, snacks, dinners). From  lunch on Day 1, to  breakfast on Day 7 (except  dinner of day 6 in Santiago de Chile).
  • General kitchen equipment (Pots, heaters).
  • Equipment and first aid kit.
  • Communication equipment for emergencies: VHF, Satellite Phone, Spot Monitoring.
  • Tents of 2, 3 or 4 people, according to availability.
  • Animals carrying general equipment in Argentine territory (until day 5 included).
  • Hostel in Santiago de Chile
  • Personal accident insurance.
  • Guides, coordination and permanent advice, before and during the crossing.


speaker_notes_offServices NOT included:

  • Transportation to Tunuyan or Mendoza and from Santiago de Chile (ask).
  • Personal camping equipment (sleeping bag, insulated sleeping pad, canes and backpack, possible to rent).
  • Passenger Assistance Insurance. (Mandatory - Request budget).
  • Dinner in Santiago de Chile.
  • Expenses caused on quitting of the program.
  • Tips