Frosinone 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 Frosinone and arrive at Treviglio every 60 minutes on average. If travelling with Trenitalia, you need to know the Frosinone to Treviglio train schedule: the first train leaves at 06:13, while the last ride is at 21:08. A Frosinone to Treviglio train cost about 59.2 €. But how long is the train ride from Frosinone to Treviglio? Your journey takes about 6 hours on average.