Gaeta 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 Formia-Gaeta and arrive at Mazara del Vallo every about 3 hours on average. If travelling with Trenitalia, you need to know the Gaeta to Mazara del Vallo train schedule: the first train leaves at 22:44, while the last ride is at 23:40. A Gaeta to Mazara del Vallo train cost about 97.6 €. But how long is the train ride from Gaeta to Mazara del Vallo? Your journey takes about 16 hours on average.