Viterbo to Siderno 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 Siderno every about 6 hours on average. If travelling with Trenitalia, you need to know the Viterbo to Siderno train schedule: the first train leaves at 06:52, while the last ride is at 06:52. A Viterbo to Siderno train cost about 84.8 €. But how long is the train ride from Viterbo to Siderno? Your journey takes about 12 hours on average.