Belgrano Sur Line

The Belgrano Sur connects Doctor Antonio Sáenz in southwest Buenos Aires with González Catán and Marinos del Crucero General Belgrano. Both main branches share the route to Tapiales. A limited outer service continues from González Catán to Lozano, and a separate tourist train runs between Tomás Jofré, Altamira, and Mercedes.

The Compañía General and Midland metre-gauge railways opened these routes in stages during the early twentieth century. Both systems were folded into the General Belgrano Railway after nationalization in 1948. The current map still reflects that history, with separate branches and a few low-frequency extensions beyond the everyday commuter service.

Use SUBE on the main metropolitan trains. The Lozano and Tomás Jofré services run much less often, so they need a schedule check rather than a casual arrival at the station. The tourist train may use its own flat fare.

Diesel multiple units handle most regular trips. They have wide doors and more interior space than a bus, but crowding is common on the shared section and frequency drops sharply outside it. Wheelchair access and platform height vary by station, particularly on the rural extensions.

Doctor Antonio Sáenz is the current city terminal. It is not the old Buenos Aires station and does not yet provide the central connection that the unfinished extension toward Constitución is intended to create. The González Catán and Marinos trains share tracks to Tapiales, where the branches separate.

Tap SUBE at the start and end of a metropolitan trip. Check the destination carefully because not every González Catán train continues to Lozano. The Tomás Jofré–Mercedes tourist operation is a separate rural service with a very limited calendar, and it should never be treated as the next leg of an ordinary commuter journey.