Sarno to Trapani 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 Trapani every about 4 hours on average. If travelling with Trenitalia, you need to know the Sarno to Trapani train schedule: the first train leaves at 09:15, while the last ride is at 21:28. A Sarno to Trapani train cost about 66.3 €. But how long is the train ride from Sarno to Trapani? Your journey takes about 6 hours on average.