Rome 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 Roma Termini and arrive at Trieste Centrale every 60 minutes on average. If travelling with Trenitalia, you need to know the Rome to Trieste train schedule: the first train leaves at 08:50, while the last ride is at 23:00. A Rome to Trieste train cost about 24.90 €. But how long is the train ride from Rome to Trieste? Your journey takes about 8 hours on average. Trenitalia offers 1 direct trains between these two cities. Thanks to Trenitalia, offers, you can save on your trip from Rome to Trieste and find low cost tickets starting from 24 €! If you need to travel this week, prices range from 39.90 € to 66.00€. Booking your train ticket a few weeks in advance though, you can find low cost trains from Rome to Trieste with fares starting from 19.90€, saving 62% on average.