Viterbo to Velletri 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 Viterbo Porta Fiorentina and arrive at Velletri every about 2 hours on average. If travelling with Trenitalia, you need to know the Viterbo to Velletri train schedule: the first train leaves at 07:03, while the last ride is at 18:34. A Viterbo to Velletri train cost about 8.2 €. But how long is the train ride from Viterbo to Velletri? Your journey takes about 5 hours on average.