Sarno 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 Sarno and arrive at Trieste Centrale every about 6 hours on average. If travelling with Trenitalia, you need to know the Sarno to Trieste train schedule: the first train leaves at 07:22, while the last ride is at 09:20. A Sarno to Trieste train cost about 143.9 €. But how long is the train ride from Sarno to Trieste? Your journey takes about 10 hours on average.