Portici 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 Portici-Ercolano and arrive at Trapani every about 4 hours on average. If travelling with Trenitalia, you need to know the Portici to Trapani train schedule: the first train leaves at 12:35, while the last ride is at 22:50. A Portici to Trapani train cost about 72.9 €. But how long is the train ride from Portici to Trapani? Your journey takes about 20 hours on average.