The journey from Izumi to Kumamoto is primarily served by the Limited Express trains, with the Hayabusa service taking the lead in terms of speed and comfort. The Hayabusa Limited Express operates at speeds of up to 130 km/h (81 mph) and covers the distance in approximately 2 hours, stopping at several key stations along the route. This service features reserved seating and offers a variety of amenities, including clean restrooms and food options.
An alternative option is the local trains that run between Izumi and Kumamoto, but they may take longer, around 3 to 4 hours, with more frequent stops. While these trains are more economical, they lack the comfort and speed of the Limited Express. For travelers looking for a swift and pleasant ride, the Hayabusa Limited Express is the recommended choice, while the local trains may suit those on a tighter budget.