Rocca di Papa to Trapani 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 Castel Gandolfo and arrive at Trapani every about 4 hours on average. If travelling with Trenitalia, you need to know the Rocca di Papa to Trapani train schedule: the first train leaves at 19:51, while the last ride is at 20:51. A Rocca di Papa to Trapani train cost about 71.5 €. But how long is the train ride from Rocca di Papa to Trapani? Your journey takes about 19 hours on average.