Sienna to Modica 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. You can count on 3 daily rides to get from Sienna to Modica. Trains leave from Siena and arrive at Modica every about 4 hours on average. If travelling with Trenitalia, you need to know the Sienna to Modica train schedule: the first train leaves at 18:02, while the last ride is at 21:26. A Sienna to Modica train cost about 133.8 €. But how long is the train ride from Sienna to Modica? Your journey takes about 20 hours on average.