The train route from Aioi to Toyohashi is primarily served by the Limited Express trains, such as the 'Mizushima' and 'Sekizen' services. These trains operate at speeds ranging from 100 km/h to 120 km/h (62 mp/h to 75 mp/h), allowing for a travel time of approximately 45 to 55 minutes between the two cities. The Limited Express 'Mizushima' provides direct service, making few stops, while the 'Sekizen' may stop at several intermediate stations, slightly extending the journey time.
Both trains offer reserved and non-reserved seating options, with comfortable configurations for passengers. Onboard services may include refreshments and free Wi-Fi in certain areas, enhancing the travel experience. For travelers specifically looking for the fastest option, the Mizushima Limited Express is suggested, due to its fewer stops and higher operational speed.