Monterotondo to Trento 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 Monterotondo-Mentana and arrive at Trento every about 1 hour on average. If travelling with Trenitalia, you need to know the Monterotondo to Trento train schedule: the first train leaves at 08:47, while the last ride is at 22:29. A Monterotondo to Trento train cost about 48.1 €. But how long is the train ride from Monterotondo to Trento? Your journey takes about 6 hours on average.