Treviglio to Siderno 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 Treviglio and arrive at Siderno every about 3 hours on average. If travelling with Trenitalia, you need to know the Treviglio to Siderno train schedule: the first train leaves at 09:02, while the last ride is at 19:02. A Treviglio to Siderno train cost about 75.2 €. But how long is the train ride from Treviglio to Siderno? Your journey takes about 16 hours on average.