The Kocaeli to Kirikkale route is predominantly served by the high-speed YHT trains, specifically the S1 type. These trains are designed for faster travel, reaching maximum speeds of up to 250 km/h (155 mph), which significantly reduces journey time compared to conventional rail services. The travel duration on this route is approximately 2 hours, with limited stops at key stations like Eskisehir.
These modern trains feature comfortable seating options, power outlets, and onboard catering services, enhancing the travel experience. Travelers can also enjoy spacious aisles and ample legroom, making it suitable for both business and leisure journeys. For those opting for speed and efficiency in their travels across Turkey, the YHT trains on this route provide a focused option without compromising on service quality.