Sant'Antimo 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 S. Antimo-S. Arpino, Napoli Centrale and arrive at Trieste Centrale, Udine every 60 minutes on average. If travelling with Trenitalia, you need to know the Sant'Antimo to Trieste train schedule: the first train leaves at 04:22, while the last ride is at 20:10. A Sant'Antimo to Trieste train cost about 92.7 €. But how long is the train ride from Sant'Antimo to Trieste? Your journey takes about 9 hours on average.