Poggibonsi to Sciacca 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 Poggibonsi-S. Gimignano and arrive at Castelvetrano every about 4 hours on average. If travelling with Trenitalia, you need to know the Poggibonsi to Sciacca train schedule: the first train leaves at 17:46, while the last ride is at 18:46. A Poggibonsi to Sciacca train cost about 167.05 €. But how long is the train ride from Poggibonsi to Sciacca? Your journey takes about 20 hours on average.