Sanremo 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 San Remo and arrive at Siderno every about 6 hours on average. If travelling with Trenitalia, you need to know the Sanremo to Siderno train schedule: the first train leaves at 11:50, while the last ride is at 11:50. A Sanremo to Siderno train cost about 278.7 €. But how long is the train ride from Sanremo to Siderno? Your journey takes about 20 hours on average.