Erba to Alcamo 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 Roma Termini and arrive at Alcamo Diramazione every about 2 hours on average. If travelling with Trenitalia, you need to know the Erba to Alcamo train schedule: the first train leaves at 07:35, while the last ride is at 22:26. A Erba to Alcamo train cost about 54.75 €. But how long is the train ride from Erba to Alcamo? Your journey takes about 15 hours on average.