Sondrio to Agropoli 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 Sondrio and arrive at Agropoli-Castellabate every about 1 hour on average. If travelling with Trenitalia, you need to know the Sondrio to Agropoli train schedule: the first train leaves at 07:38, while the last ride is at 17:38. A Sondrio to Agropoli train cost about 83.55 €. But how long is the train ride from Sondrio to Agropoli? Your journey takes about 11 hours on average.