Sarno to Treviglio trains might be a good value for money solution: travelling in Italy by train is often rather cheap and faster than taking a bus indeed Trains leave from Sarno and arrive at Treviglio every 60 minutes on average. If travelling with Trenitalia, you need to know the Sarno to Treviglio train schedule: the first train leaves at 05:40, while the last ride is at 21:28. A Sarno to Treviglio train cost about 67.0 €. But how long is the train ride from Sarno to Treviglio? Your journey takes about 9 hours on average.