Isernia to Terracina 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 Isernia and arrive at Terracina every about 4 hours on average. If travelling with Trenitalia, you need to know the Isernia to Terracina train schedule: the first train leaves at 13:29, while the last ride is at 17:49. A Isernia to Terracina train cost about 17.8 €. But how long is the train ride from Isernia to Terracina? Your journey takes about 5 hours on average.