Monopoli to Grottole 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 Monopoli and arrive at Salandra-Grottole every about 3 hours on average. If travelling with Trenitalia, you need to know the Monopoli to Grottole train schedule: the first train leaves at 09:34, while the last ride is at 22:37. A Monopoli to Grottole train cost about 15.25 €. But how long is the train ride from Monopoli to Grottole? Your journey takes about 6 hours on average.