Carpi 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 Carpi and arrive at Viterbo Porta Fiorentina every about 4 hours on average. If travelling with Trenitalia, you need to know the Carpi to Viterbo train schedule: the first train leaves at 12:27, while the last ride is at 16:27. A Carpi to Viterbo train cost about 47.9 €. But how long is the train ride from Carpi to Viterbo? Your journey takes about 7 hours on average.