The KTX service from Pyeongtaek to Jangseong begins at 5:20 AM, with the final departure at 8:50 PM. Notable stations along this route include Cheonan, Daejeon, and Gwangju. The journey is typically completed in about 1 hour and 45 minutes. Ticket prices start at ₩36,500 (approximately $30 USD) for standard class, with options for first class available for a more luxurious experience. For convenience, you can reserve a seat and complete your online booking to check the timetable and ensure your desired travel time.