To get from Frosinone a Siderno Superiore by train you can catch one of the 5 trains that everyday travel between Frosinone and Siderno, the closest station to the city. For your trip from Frosinone to Siderno by train you can choose to leave from one of Frosinone main stations: Frosinone If travelling with Trenitalia, you need to know the Frosinone to Siderno train schedule: the first train leaves at 05:41, while the last ride is at 20:23. A Frosinone to Siderno train cost about 78.4 €. But how long is the train ride from Frosinone to Siderno? Your journey takes about 11 hours on average.