Nettuno to Trieste 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 Trieste Centrale every 60 minutes on average. If travelling with Trenitalia, you need to know the Nettuno to Trieste train schedule: the first train leaves at 06:58, while the last ride is at 20:07. A Nettuno to Trieste train cost about 62.1 €. But how long is the train ride from Nettuno to Trieste? Your journey takes about 9 hours on average.