Monopoli to Trieste 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 Trieste Centrale every about 6 hours on average. If travelling with Trenitalia, you need to know the Monopoli to Trieste train schedule: the first train leaves at 04:41, while the last ride is at 04:41. A Monopoli to Trieste train cost about 117.45 €. But how long is the train ride from Monopoli to Trieste? Your journey takes about 11 hours on average.