The route from Karaman to Sakarya is primarily serviced by the regional trains run by TCDD, Turkey's state railway operator. The main service on this route is the YHT (Yüksek Hızlı Tren), which operates at speeds reaching up to 250 km/h (155 mph), though the actual travel time may vary due to scheduled stops. The journey generally takes around 4 hours, providing a balanced approach to comfort and speed. Additionally, there are standard trains that operate on this route, which cover the distance in approximately 6 hours with multiple stops along the way, making this option less ideal for those looking for a faster trip. The YHT includes amenities like air-conditioning and comfortable seating, catering to travelers who prioritize speed and efficiency.