Portici 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 Portici-Ercolano and arrive at Castelvetrano every about 6 hours on average. If travelling with Trenitalia, you need to know the Portici to Castelvetrano train schedule: the first train leaves at 08:55, while the last ride is at 22:55. A Portici to Castelvetrano train cost about 69.65 €. But how long is the train ride from Portici to Castelvetrano? Your journey takes about 14 hours on average.