Sondrio to Ventimiglia 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 Ventimiglia every about 1 hour on average. If travelling with Trenitalia, you need to know the Sondrio to Ventimiglia train schedule: the first train leaves at 04:32, while the last ride is at 18:38. A Sondrio to Ventimiglia train cost about 19.5 €. But how long is the train ride from Sondrio to Ventimiglia? Your journey takes about 7 hours on average.