Turkey and Iran are neighboring countries that share a land border, so in many places they are literally 0 km apart at the line itself.

Quick Scoop

  • The commonly cited straight‑line distance between the centers (centroids) of Turkey and Iran is about 1,816 km (1,128 miles).
  • Major city example: Istanbul to Tehran is about 2,040–2,044 km by air , and roughly 2,450 km by road.
  • At the actual border , the distance is just the width of the frontier line, so effectively “right next to each other.”

A few practical travel distances

  • Istanbul (Turkey) → Tehran (Iran): ~2,040 km by air.
  • Ankara (Turkey) → Tehran (Iran): ~1,697 km.
  • Erzurum (Turkey, in the east) → Orūmīyeh (Iran, northwest): ~421–854 km depending on the city pair used.

If you’re thinking in travel time, a typical commercial flight between major cities (like Istanbul–Tehran) is around 3 hours in the air, plus airport time, while driving can take well over a day with stops and border formalities.

Information gathered from public forums or data available on the internet and portrayed here.