Naples to Sulmona 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 Napoli Centrale and arrive at Sulmona every about 1 hour on average. If travelling with Trenitalia, you need to know the Naples to Sulmona train schedule: the first train leaves at 04:20, while the last ride is at 15:00. A Naples to Sulmona train cost about 36.5 €. But how long is the train ride from Naples to Sulmona? Your journey takes about 6 hours on average. Thanks to Trenitalia, offers, you can save on your trip from Naples to Sulmona and find low cost tickets starting from 14 €!