Argentina once had one of the most extensive railway networks outside Europe and North America — tens of thousands of kilometres built largely by British and French capital in the late 19th and early 20th centuries, connecting almost every province to Buenos Aires. Decades of underinvestment and closures, especially from the 1960s onward, left most of that network abandoned or freight-only. What remains today is a smaller but genuinely useful system around the capital, a couple of spectacular scenic lines, and a slow, real revival of a few long-distance routes.
Buenos Aires: a working commuter network
Within and around Buenos Aires, trains remain a serious way to get around. Several commuter lines radiate from the capital's main terminals — Retiro, Constitución and Once — reaching the sprawling suburbs (Gran Buenos Aires) and satellite cities such as La Plata and Luján. These are frequent, cheap, and heavily used by commuters rather than tourists, though the Tren de la Costa, a smaller line running along the northern suburbs to Tigre, is popular with visitors for its riverside scenery and connections to the Paraná Delta.
The Buenos Aires Subte (metro) is a separate system but works alongside the commuter rail for getting around the city itself — not covered here, but worth knowing about if you are combining train travel with city exploring.
The long-distance revival
For decades, "long-distance train in Argentina" meant almost nothing outside a handful of routes. That has been slowly changing. Service to Mar del Plata, the country's most popular beach resort about 400 km south of Buenos Aires, has been reinstated and upgraded in recent years, offering a genuine alternative to the bus on a well-travelled corridor. There has also been renewed government investment aimed at restoring or improving services toward Tucumán and other northern provinces, alongside upgrades on the Buenos Aires–Rosario corridor. Progress has been uneven and politically dependent — check current timetables and service status before building a trip around any of these routes, as frequency and reliability can change with little notice.
The Tren a las Nubes
The Tren a las Nubes ("Train to the Clouds"), departing from near Salta in the Andean northwest, is one of the world's great feats of railway engineering: a line built in the early 20th century to reach mining regions high in the Andes, climbing through switchbacks, spirals and a dramatic viaduct to altitudes over 4,200 m. Today it runs primarily as a tourist excursion rather than point-to-point transport — a full-day round trip from Salta rather than a way to get anywhere in particular. Seats should be booked ahead, especially in the high season (the Southern Hemisphere winter, when skies are clearest), and the altitude is worth taking seriously; some visitors feel the effects even on a day trip.
The Tren Patagónico
In the south, the Tren Patagónico runs between Viedma and Bariloche, a roughly two-day journey across the empty Patagonian steppe. It is not fast and not frequent — departures are limited, sometimes to once or twice a week — but it is a genuinely different way to see the interior of Patagonia, with basic sleeper accommodation aboard. Like the Tren a las Nubes, this is a journey best approached as an experience rather than a practical means of transport; almost all travellers moving through Patagonia rely on buses and occasional flights instead, covered in our Patagonia overland guide.
What has no rail alternative
It is worth being clear about what does not exist: there is no passenger rail connecting Buenos Aires to most of the country's major tourist destinations. Iguazú Falls, Mendoza, Bariloche via the direct route, El Calafate, Ushuaia and the northwest beyond Salta are all reached by bus or plane, not train. Travellers occasionally assume, based on Argentina's rail history, that more of the network survives for passengers than actually does — checking current status before planning is essential. See Buenos Aires to Mendoza, Buenos Aires to El Calafate and Buenos Aires to Iguazu Falls for how those specific routes actually work today, and coaches in Argentina for the bus network that fills the gap.
Booking and practicalities
Commuter and Tren de la Costa tickets are bought at station machines or with a rechargeable SUBE card, the same contactless card used on Buenos Aires buses and the Subte. For the Tren a las Nubes and Tren Patagónico, booking through the operator's website or a travel agent ahead of time is strongly advised given limited capacity and infrequent departures. For the revived long-distance services to Mar del Plata and other destinations, tickets are typically sold online or at the departure terminal; as schedules and services continue to evolve, checking the current timetable close to your travel date is worthwhile.
Frequently asked questions
Can I travel long distances in Argentina by train?
Only on a limited number of routes. Commuter rail serves Buenos Aires and its suburbs well, a revived service runs to Mar del Plata, and scenic lines include the Tren a las Nubes near Salta and the Tren Patagónico in the south. Most long-distance travel in Argentina is by bus or plane.
What is the Tren a las Nubes?
A spectacular high-altitude tourist train near Salta, climbing to over 4,200 m through switchbacks and a dramatic viaduct. It runs as a full-day excursion rather than point-to-point transport.
Is there a train from Buenos Aires to Mendoza or Bariloche?
No direct passenger rail service connects Buenos Aires to Mendoza or to Bariloche by the direct route. Both are reached by long-distance bus or a short flight.
How do I pay for commuter trains in Buenos Aires?
With a SUBE card, a rechargeable contactless card also used on the city's buses and Subte metro, available from station kiosks and top-up points across the city.
Sources and further reading:
- The Man in Seat 61 for Argentina's surviving and revived rail routes.
- Tren a las Nubes: operator website and current service bulletins.