Patagonia occupies the south of Chile and Argentina. For trekking it is not one park and not one route, but several self-contained areas: Torres del Paine, the country around El Chaltén, the Los Glaciares icefields and Tierra del Fuego. A full trip requires cross-border logistics, a time reserve and a readiness for abrupt changes of weather.
The Mountain Guide programme „At the End of the World“ combines the O circuit and the W section within it in Torres del Paine, the trails to Fitz Roy and Cerro Torre, Perito Moreno and Ushuaia. It is a long journey, not a series of day walks from a single base camp.
Chilean and Argentine Patagonia
In Chile the key area is Torres del Paine National Park, with its system of camps and trails around the Paine massif. In Argentina the hub for walking routes is El Chaltén, the starting point for Laguna de los Tres, Laguna Torre and other viewpoints.
Between the two regions lie a border and long road transfers. These cannot be treated as empty days: transport timetables, document checks and the weather all affect the whole schedule. A margin of time matters especially before internal flights.
The W trek
The W links the three main sectors of Torres del Paine: the towers, the French Valley and the Grey Glacier. The route is not a set of purely radial walks. Between camps you move with your personal kit, and how much you carry depends on the accommodation, catering and baggage transfer you have booked.
The W suits those who want to see the park’s main points in a shorter time. It is still a multi-day effort with consecutive stages, wind and limited scope for changing the camps you have reserved.
The O trek
The O is the full circuit around the massif. It includes the W but adds the more remote northern section and the crossing of the John Gardner Pass. Its length, its self-sufficiency and its demands on recovery are all greater.
In the current Mountain Guide programme the Chilean section follows the O circuit. A tent pitch, a refugio bed, catering and equipment hire inside the park are separate services. Their availability and price are confirmed in advance, because in season the camps are booked individually and have limited capacity.
El Chaltén, Fitz Roy and Cerro Torre
The Argentine stage is built around day routes from El Chaltén. The walk to Laguna de los Tres gives the classic view of Fitz Roy, and Laguna Torre the view of the Cerro Torre massif and its glacial landscape.
Here you really can return to a hotel after a day out, but the distances and the height gain remain substantial. Two hard days back to back require just as much preparation as nights under canvas.
Perito Moreno
The Perito Moreno glacier lies in a different sector of Los Glaciares, near El Calafate. Visiting the walkways or taking a boat trip is not a substitute for the trekking out of El Chaltén and requires a transfer of its own.
The old article wrongly described the area as the third largest mass of ice in the world and linked any Patagonian trek with the Concha y Toro winery. Those statements have been removed. The winery is in central Chile and is not a compulsory part of Patagonia.
Ushuaia and Tierra del Fuego
Ushuaia adds the Beagle Channel, the islands and a set of separate walking options in Tierra del Fuego. The flight, or the long overland alternative, has to be written into the programme. The town cannot be treated as an extension of Torres del Paine without a travel day of its own.
Excursions to the penguin colonies are governed by operators‘ schedules, the weather and the rules of the protected areas. The exact form of the landing or viewing is confirmed before departure.
Weather
The Patagonian wind is not a decorative detail. It affects your walking speed, your stability on exposed sections, how a tent behaves and how cold it feels. A single day can bring sun, rain, wet snow and a sharp drop in temperature.
You need waterproof layers, insulation, gloves, a hat and protection for your rucksack. An umbrella is no substitute for storm clothing. Even in summer, you must be ready to wait in the cold at a viewpoint.
Physical preparation
Training should include long walks, ascents and descents with a pack, and several consecutive days of load. For the O circuit, the ability to recover in a tent and set off again the next morning matters most of all.
Break your boots in beforehand. Poles help on rocky descents and in the wind, but you need to know how to use them. The last hard training session should not be the day before your flight, but far enough ahead to allow recovery.
Tents, refugios and catering
In Torres del Paine various combinations are possible: your own tent or a pre-pitched one, a refugio, self-catering or a full meal package. These options affect the weight of your pack, the price and the availability of places.
The phrase „travelling light“ only holds true when the logistics have been paid for and confirmed. You need to know in advance what you carry each day, where your food comes from and whether part of your baggage can be sent on.
How to choose between the W and the O
The W suits limited time and the wish to see the park’s main sectors. The O is chosen for the complete circuit, the more remote sections and a longer immersion. Anyone doing the O has to be ready for more nights out and for the hardest pass day.
Comparing routes by distance alone is not enough. Height gain, trail surface, wind, pack weight and the number of consecutive days all matter. A private variation is quoted separately.
What to check before you pay
- exact dates and confirmation of every camp;
- tent or refugio, sleeping bag, mat and catering;
- the weight of your personal pack and any baggage transfer;
- entry tickets, transfers and the border crossing;
- internal flights and the baggage allowance;
- the reserve for weather and delays;
- insurance cover for trekking and evacuation.
Before booking, watch the film shot in Patagonia by our own team and read this personal account of the route. They complement the practical structure of this article, but they do not replace the current programme page.
The published programme day by day
| Days | Area | Format |
|---|---|---|
| 1 | Puerto Natales | Arrival, accommodation and briefing |
| 2-9 | Torres del Paine | Consecutive sections of the O circuit and the exit from the park |
| 10-12 | El Chaltén | Transfer across the border and two day treks |
| 13 | El Calafate and Ushuaia | Perito Moreno, then the flight |
| 14-15 | Tierra del Fuego | An excursion day and the flight home |
This is the structure of the current fifteen-day Mountain Guide itinerary. It does not mean that every Patagonia trip has to link all four areas. In a private quotation, each transport section and each overnight stay is confirmed afresh.
The official status of trails and bookings
Before travelling you need to check not only the forecast but the park authorities‘ own notices. Seasonal closures, rules of movement and links for buying entry are published on the official CONAF page for Torres del Paine. For 2026 the full Macizo Paine, that is the O circuit, is closed for the winter from May until at least 31 October. That is a dated rule, not a permanent calendar: the following season needs to be checked again.
On the Argentine side, the Los Glaciares administration states separately that the De Agostini, Capri and Poincenot campsites require a booking. The current state of the trails and campsites is checked against the official national park recommendations, not against an old traveller’s report.
Where the trekking ends and the transport programme begins
Torres del Paine is a multi-day line between camps. El Chaltén is a base for day walks. Perito Moreno is a separate sector near El Calafate. Ushuaia is on Tierra del Fuego and needs a flight or an overland journey of its own. These differences determine your baggage, your costs and your time reserve.
The day that combines the transfer from El Chaltén, the visit to Perito Moreno and the flight to Ushuaia deserves particularly careful checking. The actual flights, the driving time and the format of the excursion must be confirmed for the specific date. This article does not replace an operational check.
Who the full journey suits
The route suits someone able to walk for several days in a row, sleep in a tent, recover after a wet and windy stage and still have the resources for day walks in Argentina. The absence of serious altitude does not turn the O circuit into a stroll for the unprepared.
If you have never camped, or have limitations in your knees or back, discuss the W first, or the day routes from El Chaltén, or a refugio-based option. The name of the trip should never matter more than the format that actually fits you.
Fact check: 16 August 2026.