Monterotondo 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 Monterotondo-Mentana and arrive at Viterbo Porta Fiorentina every 60 minutes on average. If travelling with Trenitalia, you need to know the Monterotondo to Viterbo train schedule: the first train leaves at 07:14, while the last ride is at 21:17. A Monterotondo to Viterbo train cost about 6.90 €. But how long is the train ride from Monterotondo to Viterbo? Your journey takes about 2 hours on average. Thanks to Trenitalia, offers, you can save on your trip from Monterotondo to Viterbo and find low cost tickets starting from 6 €! If you need to travel this week, prices range from 6.90 € to 9.50€.