The Taoyuan to Kaohsiung route is serviced by two primary train options: the THSR (Taiwan High Speed Rail) and the regular trains operated by TRA (Taiwan Railways Administration). The THSR trains, particularly the fastest services, can reach speeds of up to 300 km/h (186 mph) and cover the distance in about 1 hour and 30 minutes, providing a direct and swift connection with limited stops. Passengers can choose from various classes, including Business, First, and Standard, ensuring multiple levels of comfort and services onboard.
In contrast, the TRA trains take longer to complete the journey, typically around 4 to 5 hours, as they make several stops for regional accessibility. While TRA trains can be more budget-friendly, they do not match the THSR in speed and travel time efficiency. For those prioritizing time and modern amenities, the THSR is the preferred choice, while the TRA might appeal to travelers looking for a more scenic, albeit slower, travel experience.