Fermo 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 Porto S. Giorgio-Fermo and arrive at Viterbo Porta Fiorentina every about 2 hours on average. If travelling with Trenitalia, you need to know the Fermo to Viterbo train schedule: the first train leaves at 17:20, while the last ride is at 17:20. A Fermo to Viterbo train cost about 18.8 €. But how long is the train ride from Fermo to Viterbo? Your journey takes about 6 hours on average. Thanks to Trenitalia, offers, you can save on your trip from Fermo to Viterbo and find low cost tickets starting from 20 €!