Mentana 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 Monterotondo-Mentana, Roma Tiburtina and arrive at Trieste Centrale, Udine, Venezia S. Lucia every 30 minutes on average. If travelling with ItaloTreno, you need to know the Mentana to Trieste train schedule: the first train leaves at 18:55, while the last ride is at 18:55. ItaloTreno offers 1 direct trains between these two cities. There are also Trenitalia trains from Mentana to Trieste; you can compare ItaloTreno and Trenitalia with Wanderio, so that you find the best fare in a quick and simple way. A Mentana to Trieste train ticket with Trenitalia costs 19.90 € on average and you can find rides from 06:02 to 22:59. If you need to travel this week, prices start from 59.90€. When booking your train ticket a few weeks in advance though, you can find low cost trains from Mentana to Trieste with fares starting from 19.90€, saving up to 71%.