Ancona to Monterotondo 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 Ancona and arrive at Monterotondo-Mentana every about 3 hours on average. If travelling with Trenitalia, you need to know the Ancona to Monterotondo train schedule: the first train leaves at 03:50, while the last ride is at 18:21. A Ancona to Monterotondo train cost about 15.3 €. But how long is the train ride from Ancona to Monterotondo? Your journey takes about 5 hours on average.