The train service from Ermidas - Sado to Aveiro primarily operates through the Comboios de Portugal (CP) system, utilizing the regional train services. The primary train serving this route is the Intercidades, which connects smaller towns to larger cities with reasonable frequency. The journey from Ermidas - Sado to Aveiro typically takes approximately 2 hours and 30 minutes, depending on connections and waiting times. The Intercidades trains reach speeds of up to 160 km/h (99 mph) on certain sections, providing a relatively quick journey between lesser-known locations and urban centers. On this route, passengers can expect comfortable seating, with both standard and first-class options available. The Intercidades trains offer basic amenities such as Wi-Fi and refreshment services, enhancing the travel experience. For those traveling between these two destinations, the Intercidades train is a preferred choice, although direct services may not be as frequent as within major cities. Overall, while rail options from Ermidas - Sado to Aveiro may lack high-speed alternatives, the reliability and speed of the Intercidades trains make them a viable option for both leisure and business travelers.