Prato to Legnano 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 Prato Porta al Serraglio and arrive at Legnano every about 1 hour on average. If travelling with Trenitalia, you need to know the Prato to Legnano train schedule: the first train leaves at 06:30, while the last ride is at 19:39. A Prato to Legnano train cost about 57.6 €. But how long is the train ride from Prato to Legnano? Your journey takes about 4 hours on average.