The route from Tosu to Hiroshima is primarily serviced by the Shinkansen trains, specifically the Sakura and Mizuho services, allowing for quick and efficient travel. The Sakura Shinkansen operates at speeds of up to 240 km/h (149 mph), covering the distance in approximately 1 hour and 45 minutes, with several key stops along the way for passenger convenience. Meanwhile, the Mizuho service is the fastest option, reaching speeds of up to 285 km/h (177 mph) and reducing travel time to about 1 hour and 30 minutes.
Both trains offer comfortable seating options, including Standard and Green class. The Green class seats provide a more spacious environment for travelers looking for added comfort. In addition to speed, both trains are equipped with modern amenities such as free Wi-Fi, power outlets, and refreshments available for purchase, ensuring a pleasant journey between Tosu and Hiroshima.