Fondi 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 Fondi-Sperlonga and arrive at Viterbo Porta Fiorentina every 60 minutes on average. If travelling with Trenitalia, you need to know the Fondi to Viterbo train schedule: the first train leaves at 06:29, while the last ride is at 19:04. A Fondi to Viterbo train cost about 12.3 €. But how long is the train ride from Fondi to Viterbo? Your journey takes about 4 hours on average.