Gallarate 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 Gallarate and arrive at Viterbo Porta Fiorentina every about 2 hours on average. If travelling with Trenitalia, you need to know the Gallarate to Viterbo train schedule: the first train leaves at 07:58, while the last ride is at 21:46. A Gallarate to Viterbo train cost about 42.2 €. But how long is the train ride from Gallarate to Viterbo? Your journey takes about 8 hours on average.