Travelers between Viana do Castelo and Aveiro can utilize the Intercity and Regional train services. The Intercity trains, typically operated by Comboios de Portugal (CP), offer a more rapid connection and travel at speeds of up to 160 km/h (99 mph). This option covers the distance in approximately 2 hours, providing a direct link with limited stops in key towns. Conversely, the Regional trains operate at a slower pace, averaging around 100 km/h (62 mph) and taking about 2 hours and 30 minutes to complete the journey, as they stop at more local stations along the way.
Both train types afford comfortable seating, with Intercity services featuring options for reserved seating and onboard facilities, making it suitable for those looking for a faster option. The Regional trains, while slower, provide a scenic experience as they cover picturesque areas between the two cities. Overall, for a quicker journey, the Intercity option is recommended, whereas the Regional service is ideal for travelers who prefer to explore smaller towns.