The train services from Minamata to Kitakyushu primarily utilize the Limited Express "Sonic" service. This train operates between these two cities, providing passengers with comfortable seating options and an onboard experience that prioritizes ease of travel. The Sonic can reach speeds of up to 130 km/h (81 mph) and completes the journey in approximately 2 hours and 30 minutes, which includes a few scheduled stops along the route.
Unlike high-speed Shinkansen trains, the Sonic is a Limited Express service that connects smaller cities without making the longer distances of high-speed rail available. In comparison, other services such as the local trains take significantly longer to cover the same distance, typically over 3 hours, depending on the number of stops. While the Limited Express Sonic service offers a quicker alternative with amenities like air-conditioned coaches and refreshments, it still ensures a reliable connection between Minamata and Kitakyushu for both local commuters and travelers.