Caltanissetta 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 Caltanissetta Centrale and arrive at Viterbo Porta Fiorentina every about 12 hours on average. If travelling with Trenitalia, you need to know the Caltanissetta to Viterbo train schedule: the first train leaves at 17:43, while the last ride is at 17:43. A Caltanissetta to Viterbo train cost about 103.2 €. But how long is the train ride from Caltanissetta to Viterbo? Your journey takes about 16 hours on average.