If you don't feel like spending many hours in a train, you can consider travelling by plane. Especially if you have the possibility to book in advance, flying to Rosario can be definitely cheap.
Which stations do the trains to Rosario leave from?
The trains to Rosario can leave from Mendoza (Mendoza - Argentina) and arrive at Rosario (Santa Fe - Argentina).
What time do the trains to Rosario leave and how long is the journey?
The first train to Rosario leaves at 15:12, whereas the last one at 20:12. On average, the journey lasts 12 hours and 8 minutes, but with the fastest connections you will be in Rosario in 11 hours and 10 minutes.