There are train services from Turkey to Bulgaria, Romania, Iran and Austria.
Only Sofia and Tabriz trains run during whole year.
Optima Expres and Bucharest trains run only some periods of year.
The train to Belgrade had run for a short time and then suspended.
Tehran (Transasia) train is currently not running, but is expected to restart running in 2019.
The train which is supposed to run on recently opened Baku-Tbilisi-Kars line is not clear yet.