Sarno to Florence 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 Firenze S. M. Novella every about 1 hour on average. If travelling with Trenitalia, you need to know the Sarno to Florence train schedule: the first train leaves at 07:22, while the last ride is at 21:28. A Sarno to Florence train cost about 62.1 €. But how long is the train ride from Sarno to Florence? Your journey takes about 6 hours on average.