There is no single universal route on Aconcagua. The phrase “climbing Aconcagua” can mean a high-altitude ascent along the trails and scree of the Normal Route, or a serious ice or big-wall expedition. These are different undertakings, with different qualifications, logistics and acceptable levels of risk.
The main routes on Aconcagua
The Normal Route via Horcones
The classic line starts in the Horcones valley. The approach runs through Confluencia to Plaza de Mulas, the main base camp on the western side. Above that a sequence of high camps is established, after which the group makes for the summit on the north-west side.
In normal seasonal conditions the route requires no obligatory rock climbing and no crossing of a crevassed glacier. Its difficulty comes from the altitude of 6962 m, the wind, the cold, the scree, the load carrying and the length of summit day. With snow and icing, the technical demands of individual sections increase.
Advantages of the route:
- a clear and well-proven logistical scheme
- a well-developed base camp
- the option of building a programme of various lengths
- no obligatory difficult ice sections in standard conditions
Limitations:
- heavy traffic on popular dates
- the dry, windy character of the western side
- a rapid gain in height if you try to shorten the programme too far
The traverse via the Vacas valley and Plaza Argentina
This option is often called the Polish Traverse or the 360 route. The approach goes up the Vacas valley to the Plaza Argentina base camp on the eastern side. After the ascent the group joins the upper part of the classic line and usually descends to Plaza de Mulas and Horcones.
The traverse is valued for its more varied route, for taking in two sides of the mountain and for a less crowded approach. It requires its own logistics, with services at two different base camps, and it is not simply “another way in” to the same programme. Its duration and margin of days are worked out separately.
The Polish Glacier
The Polish Glacier routes are technical ice climbs. Here you need to be confident with crampons, ice axe and rope, to have belaying skills, to be able to assess ice conditions and to have experience on steep ground. The name “Polish route” is sometimes also used for the traverse, so when choosing a programme what matters is not the marketing name but the actual line taken.
The South Face
The South Face of Aconcagua is a category of serious technical climbing in its own right. It is not an alternative to the Normal Route for a traveller who would like fewer people around. The wall routes demand a high level of mountaineering qualification, self-sufficiency and expedition experience.
Comparing the routes
| Route | Character | Who it suits |
|---|---|---|
| Normal Route | A high-altitude route on trails, scree and possible snow sections | Prepared climbers with suitable experience and acclimatisation |
| Polish Traverse / 360 | A long approach via Vacas, an ascent from the Plaza Argentina side and a descent via Plaza de Mulas | Those who want variety and a full traverse of the mountain |
| Polish Glacier | A technical ice route | Experienced mountaineers with ice training |
| South Face | Hard technical lines | Self-sufficient, strong teams with the appropriate qualifications |
Which route the Mountain Guide programmes use
The main Mountain Guide programmes of 17, 12 and 7 days are built on the classic route from the Horcones and Plaza de Mulas side. The conditions, the camps and the equipment list are confirmed from the page of the specific programme and again before departure, because the state of the mountain can change the practical difficulty.
If you are choosing between these formats, start with the article on the difference between the 17, 12 and 7-day programmes. A full overview of the mountain and its requirements is in the Aconcagua guide.
Why a route name has to be checked against the actual line
In commercial descriptions the words Polish Route may refer to the traverse via Plaza Argentina or to a technical ascent of the Polish Glacier. These are fundamentally different propositions. Before you pay, you need to see the approach valley, the base camp, the high camps, the side of the descent and the technical requirements.
| Check | What should be clear |
|---|---|
| Park entry | Horcones or the Vacas valley |
| Base camp | Plaza de Mulas or Plaza Argentina |
| The upper line | Classic terrain or the glacier |
| Descent | The same side or a traverse |
| Skills | A high-altitude trek or technical mountaineering |
| Logistics | One base or services on two sides |
The Normal Route is not always the same
Snow, ice, wind and the state of the trail all change the practical difficulty. Even on the classic line, an equipment list cannot be copied from an old trip report. Before the season and on the ground, the guide decides whether crampons and an ice axe are needed on particular sections and how to set the pace.
How to choose between the classic route and the traverse
The Normal Route suits anyone who wants a clear sequence based on Plaza de Mulas and who is choosing one of the current Mountain Guide programmes. The traverse is attractive for the change of valleys and sides of the mountain, but it needs its own duration, services at Plaza Argentina and logistics for exiting via Horcones.
- Do not choose the traverse simply to avoid crowds.
- Do not describe the Polish Glacier as a trekking alternative.
- Take account of the whole team’s experience, not the strongest member’s.
- Match your technical kit to the route you are actually doing.
- Build in a reserve appropriate to the line and the logistics you have chosen.
Which programmes Mountain Guide publishes
17 days, 12 days and 7 days all follow the classic Normal Route via Confluencia and Plaza de Mulas. The combination with Ojos del Salado is a separate expedition, not a new route on Aconcagua.
The full context is in the Aconcagua guide, and the camps on the classic line are covered in a separate article.
Deciding on a route in three steps
- Establish whether you want a high-altitude trek or a technical climb.
- Match the experience of the whole team against the terrain and the degree of self-sufficiency.
- Check the full plan for entry, camps and descent.
If you want a first experience of around 7000 m without a technical ice route, the Normal Route is the usual choice. If a traverse matters to you, you need separate logistics via Vacas and Plaza Argentina. The Polish Glacier is only chosen by those with the appropriate ice qualifications.
Why the route affects the budget
A different valley means different transport, a different base camp, different mules, days and team composition. A technical line adds equipment and raises the requirements placed on the guides. The price of the Normal Route therefore cannot be transferred to the traverse or the glacier without a fresh calculation.
For the structure of the costs, see the article on pricing, and for services for your own team, the logistics overview.
Five questions to ask before choosing a route
| Question | Why it matters |
|---|---|
| Which valley does the entry use? | Determines the approach and the base camp |
| Where does the upper line run? | Separates a scree route from technical ice |
| Which side does the descent use? | Shows whether the programme is a traverse |
| Which skills are compulsory? | Stops the glacier being sold as an ordinary high-altitude trek |
| Which camps are serviced? | Determines mules, meals and the cost of two sides |
The answers should be in the programme or the specification. The names “360”, “Polish” or “classic” are not enough on their own, without the line of entry and exit.
The phases of the Normal Route
- Entry via Horcones. Permit check and the start of the approach.
- Confluencia. The first nights and the walk out to Plaza de Francia.
- Plaza de Mulas. Base camp, rest and preparation for the high-altitude cycles.
- The high camps. Plaza Canada, Nido de Condores and Cólera, according to the programme’s schedule.
- The summit attempt. The climb to 6962 m and the return.
- Exit. The descent to Plaza de Mulas and out via Horcones.
This sequence applies to the published 17-day programme. The shorter formats use the same side of the mountain but do not replicate the full profile of nights.
What the 360 traverse means
The traverse enters via the Vacas valley, uses Plaza Argentina and comes out on the western side, descending afterwards through Plaza de Mulas and Horcones. Its value lies in a continuous line across two sides of the mountain, not merely in a quieter approach.
For a route like this, services at both base camps, baggage transfer, the side you come out on and transport after the finish are all confirmed in advance. A Normal Route package cannot be treated as ready-made 360 logistics.
Polish Traverse and Polish Glacier
The shared word “Polish” creates a dangerous confusion. The traverse may bypass the technical ice line altogether and join the upper part of the classic route. The Polish Glacier means working on the glacier itself, with different demands on skills, equipment and leadership.
Before booking, you should receive a map or a precise description of the upper section. If the seller cannot explain whether the team goes onto the glacier, there is no way to judge the standard of the product.
How the route changes acclimatisation
What you compare is not only the total duration but the sleeping altitudes, the day outings and the returns to lower ground. Different valleys create different sequences, and a technical line adds work that cannot be judged by camp altitude alone.
Fresh acclimatisation for a short classic programme is not automatic clearance for the glacier. Tolerance of altitude and technical qualification are confirmed separately.
How the route changes your equipment
| Line | Basic requirement | What is confirmed before departure |
|---|---|---|
| Normal Route | High-altitude kit plus technical items according to conditions | Snow, ice, crampons and ice axe |
| 360 / Polish Traverse | Kit for a full traverse and two valleys | Baggage transfer and the side of the descent |
| Polish Glacier | Ice and rope equipment | The specific line, the skills and the leadership |
| South Face | Specialised technical kit | The project, the qualifications and the team’s self-sufficiency |
The final list is set not by the name of the mountain but by the actual route and the conditions of the season.
Weather and the options for retreat
The western and eastern sides need not have the same conditions. Wind, snow and the state of the approach all affect the camps and the timings. On a traverse it is important to know where your baggage and transport will be if the team does not complete the planned line.
A technical route needs its own turnaround and descent plan. This article does not set turnaround times: those are determined by the leader, according to the line, the group and the weather.
The guide and the team’s self-sufficiency
On the Normal Route you follow the programme and the leader’s decisions. On technical lines, belaying skills, moving independently, assessing the state of the ice and the ability of the whole rope team to work on difficult ground all become critical.
The strongest member’s experience does not extend to everyone else. Before a technical expedition is confirmed, each person’s altitude and mountaineering record is checked.
The logistical specification of a route
- The point of entry to the park
- The approach valley
- The base camp
- The sequence of high camps
- The actual upper line
- The side and point of exit
- Mules and carries by section
- The reserve and the plan if the route changes
If even one of these is undefined, the price and the requirements remain provisional.
Who should not choose on price alone
The cheapest programme may have a different duration, different entry requirements and a different level of service. A traverse should not be compared with the Normal Route on final price alone, nor the glacier on the number of days.
Choose the type of climb and the qualifications first, then compare programmes on the same line. That prevents you buying a product that does not match your experience or your expectations.
The permit and the declared line
A permit is issued for the actual type of activity and route, under the park rules in force. Do not assume that a document for an ordinary ascent automatically covers a technical line or a different pattern of entry and exit.
Before payment, the operator checks the dates, the entry, the exit, the base camp and the declared route. If the plan changes, the possibility of amending the permit is checked officially, not promised on the basis of last season.
Getting your gear moved on the different routes
The Normal Route mules serve the chain of the approach to Plaza de Mulas. In the Vacas valley a different line runs to Plaza Argentina, and finishing the traverse means having your belongings collected or brought out on the western side.
| Scenario | What to confirm |
|---|---|
| Normal Route | Delivery to Plaza de Mulas and the return leg |
| 360 | Entry at Vacas, services at Plaza Argentina and exit at Horcones |
| Glacier | High-altitude carries according to the technical plan |
| Early exit | Where your duffel is and how the team travels |
Mapping out your expectations
Before booking, set down in writing what you are expecting: a first altitude of around 7000 m, a full traverse, an ice line or a self-sufficient technical project. These aims cannot be substituted for one another after payment.
If your main wish is fewer people or a fine view, that is discussed alongside qualifications and logistics. An aesthetic preference does not lower the objective requirements of a route.
Final route checklist
- The name is confirmed by the actual line.
- The entry, base and descent are clear.
- The altitude profile matches your experience.
- Technical skills have been verified.
- The equipment relates to current conditions.
- Logistics for both sides are included in writing.
- There is a reserve and a procedure for changing the plan.
Chosen your route? Check which of the published Aconcagua formats actually uses the line, the duration and the level of support you need.
Fact check: 17 August 2026. The specific line and conditions are confirmed for the expedition you choose.