Como to Trezzano sul Naviglio 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 Como S. Giovanni and arrive at Gaggiano every 30 minutes on average. If travelling with Trenitalia, you need to know the Como to Trezzano sul Naviglio train schedule: the first train leaves at 07:13, while the last ride is at 19:13. A Como to Trezzano sul Naviglio train cost about 6.7 €. But how long is the train ride from Como to Trezzano sul Naviglio? Your journey takes about 2 hours on average.