The train route from Nine to Vila Nova de Gaia - Devesas is serviced primarily by the Alfa Pendular, Portugal's flagship intercity service. This train offers a comfortable experience with features such as reclining seats and onboard refreshments. The Alfa Pendular reaches speeds of up to 220 km/h (137 mph), completing the journey in approximately 1 hour and 15 minutes, making it the fastest option available on this route.
There are also Regional trains that operate between these two points, which provide a slower service with an average speed of about 80 km/h (50 mph) and take around 2 hours for the journey. While these regional services make more stops at smaller stations, they can be a good option for travelers looking to explore more of the countryside.
In summary, for speed and comfort, the Alfa Pendular is preferred, whereas Regional trains cater to those wanting a slower pace or to visit additional stops along the journey.