Trieste to Castelvetrano 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 Trieste Centrale and arrive at Castelvetrano every about 2 hours on average. If travelling with Trenitalia, you need to know the Trieste to Castelvetrano train schedule: the first train leaves at 15:15, while the last ride is at 20:40. A Trieste to Castelvetrano train cost about 122.4 €. But how long is the train ride from Trieste to Castelvetrano? Your journey takes about 8 hours on average.