The Eastern Express (Doğu Ekspresi) runs the 1,310km from Ankara to Kars in approximately 24 hours, passing through the volcanic landscape of central Anatolia, the mountains of eastern Turkey, and arriving at Kars station in the early morning. It is one of the great overland train journeys in Turkey, and the social media attention it received from around 2018 onwards has made booking competitive.
The train has sleeping compartments (couchettes) and seat cars. The journey is most spectacular in winter when the landscape is covered in snow — but the cold at the eastern end of the route is serious, and arriving in Kars in January at dawn requires warm clothing. The train runs year-round; booking through TCDD (Turkish State Railways) is essential well in advance, especially for sleeper berths. The station in Kars is walkable to the city centre.