Viterbo 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 Viterbo Porta Fiorentina and arrive at Trapani every about 6 hours on average. If travelling with Trenitalia, you need to know the Viterbo to Trapani train schedule: the first train leaves at 05:15, while the last ride is at 05:15. A Viterbo to Trapani train cost about 190.2 €. But how long is the train ride from Viterbo to Trapani? Your journey takes about 17 hours on average.