Avola 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 Avola and arrive at Viterbo Porta Fiorentina every about 4 hours on average. If travelling with Trenitalia, you need to know the Avola to Viterbo train schedule: the first train leaves at 06:53, while the last ride is at 18:18. A Avola to Viterbo train cost about 85.55 €. But how long is the train ride from Avola to Viterbo? Your journey takes about 17 hours on average.