Velletri 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 Velletri and arrive at Viterbo Porta Fiorentina every about 1 hour on average. If travelling with Trenitalia, you need to know the Velletri to Viterbo train schedule: the first train leaves at 07:26, while the last ride is at 20:00. A Velletri to Viterbo train cost about 8.2 €. But how long is the train ride from Velletri to Viterbo? Your journey takes about 4 hours on average.