Grosseto 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 Grosseto and arrive at Trieste Centrale every 60 minutes on average. If travelling with Trenitalia, you need to know the Grosseto to Trieste train schedule: the first train leaves at 07:19, while the last ride is at 19:45. A Grosseto to Trieste train cost about 55.4 €. But how long is the train ride from Grosseto to Trieste? Your journey takes about 9 hours on average. Thanks to Trenitalia, offers, you can save on your trip from Grosseto to Trieste and find low cost tickets starting from 54 €!