Frosinone to Rosolini 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 Frosinone and arrive at Rosolini every about 3 hours on average. If travelling with Trenitalia, you need to know the Frosinone to Rosolini train schedule: the first train leaves at 18:59, while the last ride is at 20:21. A Frosinone to Rosolini train cost about 104.05 €. But how long is the train ride from Frosinone to Rosolini? Your journey takes about 16 hours on average.