Carmagnola 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 Carmagnola and arrive at Viterbo Porta Fiorentina every about 1 hour on average. If travelling with Trenitalia, you need to know the Carmagnola to Viterbo train schedule: the first train leaves at 09:10, while the last ride is at 15:10. A Carmagnola to Viterbo train cost about 81.5 €. But how long is the train ride from Carmagnola to Viterbo? Your journey takes about 8 hours on average.