Olbia to Carbonia 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 Olbia and arrive at Carbonia Serbariu every about 3 hours on average. If travelling with Trenitalia, you need to know the Olbia to Carbonia train schedule: the first train leaves at 05:53, while the last ride is at 16:02. A Olbia to Carbonia train cost about 18.3 €. But how long is the train ride from Olbia to Carbonia? Your journey takes about 5 hours on average. Thanks to Trenitalia, offers, you can save on your trip from Olbia to Carbonia and find low cost tickets starting from 21 €!