Cento 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 S. Pietro in Casale and arrive at Trieste Centrale every 60 minutes on average. If travelling with Trenitalia, you need to know the Cento to Trieste train schedule: the first train leaves at 00:09, while the last ride is at 20:49. A Cento to Trieste train cost about 18.2 €. But how long is the train ride from Cento to Trieste? Your journey takes about 4 hours on average.