Isernia 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 Isernia and arrive at Trapani every about 6 hours on average. If travelling with Trenitalia, you need to know the Isernia to Trapani train schedule: the first train leaves at 08:25, while the last ride is at 18:58. A Isernia to Trapani train cost about 79.95 €. But how long is the train ride from Isernia to Trapani? Your journey takes about 11 hours on average.