Nettuno to Castelvetrano 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 Nettuno and arrive at Castelvetrano every about 12 hours on average. If travelling with Trenitalia, you need to know the Nettuno to Castelvetrano train schedule: the first train leaves at 05:53, while the last ride is at 05:53. A Nettuno to Castelvetrano train cost about 92.35 €. But how long is the train ride from Nettuno to Castelvetrano? Your journey takes about 16 hours on average.