Trieste 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 Trieste Centrale and arrive at Viterbo Porta Fiorentina every about 1 hour on average. If travelling with Trenitalia, you need to know the Trieste to Viterbo train schedule: the first train leaves at 08:15, while the last ride is at 20:40. A Trieste to Viterbo train cost about 57.3 €. But how long is the train ride from Trieste to Viterbo? Your journey takes about 9 hours on average. Thanks to Trenitalia, offers, you can save on your trip from Trieste to Viterbo and find low cost tickets starting from 48 €!