Comiso 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 Comiso and arrive at Viterbo Porta Fiorentina every about 12 hours on average. If travelling with Trenitalia, you need to know the Comiso to Viterbo train schedule: the first train leaves at 13:29, while the last ride is at 13:29. A Comiso to Viterbo train cost about 81.4 €. But how long is the train ride from Comiso to Viterbo? Your journey takes about 21 hours on average.