Potenza to Agrigento 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 Potenza Centrale and arrive at Agrigento Centrale every about 6 hours on average. If travelling with Trenitalia, you need to know the Potenza to Agrigento train schedule: the first train leaves at 19:02, while the last ride is at 19:02. A Potenza to Agrigento train cost about 74.91 €. But how long is the train ride from Potenza to Agrigento? Your journey takes about 19 hours on average.