Castel Volturno 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 Cancello-Arnone, Napoli Centrale and arrive at Siderno, Villa S. Giovanni every 60 minutes on average. If travelling with Trenitalia, you need to know the Castel Volturno to Siderno train schedule: the first train leaves at 07:14, while the last ride is at 23:53. A Castel Volturno to Siderno train cost about 49.90 €. But how long is the train ride from Castel Volturno to Siderno? Your journey takes about 8 hours on average. Trenitalia offers 2 direct trains between these two cities.