San Donato Milanese to Trieste 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 Venezia S. Lucia, Borgo Lombardo and arrive at Trieste Centrale every 20 minutes on average. If travelling with Trenitalia, you need to know the San Donato Milanese to Trieste train schedule: the first train leaves at 06:41, while the last ride is at 22:41. A San Donato Milanese to Trieste train cost about 13.50 €. But how long is the train ride from San Donato Milanese to Trieste? Your journey takes about 2 hours on average. Trenitalia offers 22 direct trains between these two cities. If you need to travel this week, prices range from 13.50 € to 19.30€. Booking your train ticket a few weeks in advance though, you can find low cost trains from San Donato Milanese to Trieste with fares starting from 13.50€, saving 12% on average.