Palermo to Viterbo 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 Palermo Notarbartolo and arrive at Viterbo Porta Fiorentina every about 4 hours on average. If travelling with Trenitalia, you need to know the Palermo to Viterbo train schedule: the first train leaves at 09:10, while the last ride is at 17:44. A Palermo to Viterbo train cost about 100.1 €. But how long is the train ride from Palermo to Viterbo? Your journey takes about 17 hours on average.