Potenza 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 Potenza Superiore and arrive at Siderno every about 12 hours on average. If travelling with Trenitalia, you need to know the Potenza to Siderno train schedule: the first train leaves at 07:48, while the last ride is at 07:48. A Potenza to Siderno train cost about 23.55 €. But how long is the train ride from Potenza to Siderno? Your journey takes about 10 hours on average.