Grottaglie 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 Grottaglie and arrive at Treviglio every 60 minutes on average. If travelling with Trenitalia, you need to know the Grottaglie to Treviglio train schedule: the first train leaves at 06:29, while the last ride is at 13:04. A Grottaglie to Treviglio train cost about 104.4 €. But how long is the train ride from Grottaglie to Treviglio? Your journey takes about 12 hours on average.