Gaeta to Potenza 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 Potenza Superiore every about 4 hours on average. If travelling with Trenitalia, you need to know the Gaeta to Potenza train schedule: the first train leaves at 08:34, while the last ride is at 19:34. A Gaeta to Potenza train cost about 23.5 €. But how long is the train ride from Gaeta to Potenza? Your journey takes about 5 hours on average.