Olbia to Rosolini 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 Rosolini every about 1 hour on average. If travelling with Trenitalia, you need to know the Olbia to Rosolini train schedule: the first train leaves at 07:35, while the last ride is at 22:26. A Olbia to Rosolini train cost about 62.95 €. But how long is the train ride from Olbia to Rosolini? Your journey takes about 14 hours on average.