Acqui Terme 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 Acqui Terme and arrive at Siderno every about 6 hours on average. If travelling with Trenitalia, you need to know the Acqui Terme to Siderno train schedule: the first train leaves at 14:14, while the last ride is at 18:17. A Acqui Terme to Siderno train cost about 121.6 €. But how long is the train ride from Acqui Terme to Siderno? Your journey takes about 19 hours on average.