Grottaferrata to Siderno 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 Frascati and arrive at Siderno every about 3 hours on average. If travelling with Trenitalia, you need to know the Grottaferrata to Siderno train schedule: the first train leaves at 06:35, while the last ride is at 09:37. A Grottaferrata to Siderno train cost about 72.6 €. But how long is the train ride from Grottaferrata to Siderno? Your journey takes about 10 hours on average.