Treviglio to Seregno 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 Seregno every 20 minutes on average. If travelling with Trenitalia, you need to know the Treviglio to Seregno train schedule: the first train leaves at 05:18, while the last ride is at 22:02. A Treviglio to Seregno train cost about 5.5 €. But how long is the train ride from Treviglio to Seregno? Your journey takes about 1 hour on average.