Portici to Mazara del Vallo 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 Mazara del Vallo, Napoli Centrale every about 2 hours on average. If travelling with Trenitalia, you need to know the Portici to Mazara del Vallo train schedule: the first train leaves at 08:50, while the last ride is at 21:32. A Portici to Mazara del Vallo train cost about 1 €. But how long is the train ride from Portici to Mazara del Vallo? Your journey takes about 10 hours on average.