The route from Kaohsiung to Tainan is primarily serviced by Taiwan's High-Speed Rail (THSR), specifically the HSR series trains. These trains can reach speeds of up to 300 km/h (186 mph), allowing travelers to cover the distance in approximately 30 minutes, making it one of the most efficient ways to travel between these two major cities in Taiwan.
There are several daily departures, and the trains offer comfortable seating, with options for both standard and business class. The high-speed service ensures fewer stops, facilitating quick access between the urban centers. A notable aspect of the HSR is its punctuality and modern amenities, which include free Wi-Fi, food services, and spacious luggage areas. Alternatively, there are also slower local trains available, but they take significantly longer, ranging from about 1.5 to 2 hours depending on the specific service and number of stops. For those prioritizing speed, the THSR is the recommended choice.