Valenza to Portici 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 Valenza and arrive at Portici-Ercolano every about 1 hour on average. If travelling with Trenitalia, you need to know the Valenza to Portici train schedule: the first train leaves at 06:54, while the last ride is at 21:30. A Valenza to Portici train cost about 51.5 €. But how long is the train ride from Valenza to Portici? Your journey takes about 9 hours on average.