To get from Sondrio a Siderno Superiore by train you can catch one of the 10 trains that everyday travel between Sondrio and Siderno, the closest station to the city. For your trip from Sondrio to Siderno by train you can choose to leave from one of Sondrio main stations: Sondrio, Milano Porta Garibaldi If travelling with Trenitalia, you need to know the Sondrio to Siderno train schedule: the first train leaves at 04:32, while the last ride is at 23:17. A Sondrio to Siderno train cost about 69.50 €. But how long is the train ride from Sondrio to Siderno? Your journey takes about 15 hours on average. Trenitalia offers 2 direct trains between these two cities.