Legnano 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 Legnano and arrive at Monterotondo-Mentana every about 2 hours on average. If travelling with Trenitalia, you need to know the Legnano to Monterotondo train schedule: the first train leaves at 13:02, while the last ride is at 21:59. A Legnano to Monterotondo train cost about 58.3 €. But how long is the train ride from Legnano to Monterotondo? Your journey takes about 7 hours on average.