Sienna to Udine 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 Siena and arrive at Udine every 60 minutes on average. If travelling with Trenitalia, you need to know the Sienna to Udine train schedule: the first train leaves at 07:15, while the last ride is at 21:26. A Sienna to Udine train cost about 44.2 €. But how long is the train ride from Sienna to Udine? Your journey takes about 7 hours on average. Thanks to Trenitalia, offers, you can save on your trip from Sienna to Udine and find low cost tickets starting from 27 €!