Sienna 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. You can count on 12 daily rides to get from Sienna to Treviglio. Trains leave from Siena and arrive at Treviglio every 60 minutes on average. If travelling with Trenitalia, you need to know the Sienna to Treviglio train schedule: the first train leaves at 06:36, while the last ride is at 19:41. A Sienna to Treviglio train cost about 70.0 €. But how long is the train ride from Sienna to Treviglio? Your journey takes about 5 hours on average.