Casa Santa 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 Trapani and arrive at Viterbo Porta Fiorentina every about 6 hours on average. If travelling with Trenitalia, you need to know the Casa Santa to Viterbo train schedule: the first train leaves at 05:43, while the last ride is at 05:43. A Casa Santa to Viterbo train cost about 185.0 €. But how long is the train ride from Casa Santa to Viterbo? Your journey takes about 17 hours on average.