Treviglio to Trieste 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 Trieste Centrale every 60 minutes on average. If travelling with Trenitalia, you need to know the Treviglio to Trieste train schedule: the first train leaves at 06:56, while the last ride is at 19:56. A Treviglio to Trieste train cost about 47.25 €. But how long is the train ride from Treviglio to Trieste? Your journey takes about 5 hours on average.