To get from Sulmona a Siderno Superiore by train you can catch one of the 6 trains that everyday travel between Sulmona and Siderno, the closest station to the city. For your trip from Sulmona to Siderno by train you can choose to leave from one of Sulmona main stations: Sulmona If travelling with Trenitalia, you need to know the Sulmona to Siderno train schedule: the first train leaves at 07:24, while the last ride is at 18:01. A Sulmona to Siderno train cost about 78.8 €. But how long is the train ride from Sulmona to Siderno? Your journey takes about 15 hours on average.