Traveling from Kayas to Diyarbakir, passengers can utilize the conventional trains operated by TCDD Taşımacılık. The main service on this route is the regional train, which generally travels at speeds ranging from 80 to 120 km/h (50 to 75 mph). The journey typically takes around 5 to 6 hours, depending on the specific service and any intermediate stops along the way.
The regional train offers standard seating and a basic level of onboard amenities, providing a functional travel experience. While not as fast as high-speed options found on other routes in Turkey, this train allows travelers to enjoy the scenery of Southeastern Anatolia as they make the connection between these two locations. Travelers should plan their departure times accordingly, as the frequency of services may vary throughout the week.