Syria–Turkey border

The border between the Syrian Arab Republic and the Republic of Turkey (Arabic: الحدود السورية التركية, romanized: alhudud alsuwriat alturkia; Turkish: Suriye–Türkiye sınırı) is 909 kilometres (565 mi) long, and runs from the Mediterranean Sea in the west to the tripoint with Iraq in the east. It runs across Upper Mesopotamia for some 400 kilometres (250 mi), crossing the Euphrates and reaching as far as the Tigris. Much of the border follows the Southern Turkish stretch of the Baghdad Railway, roughly along the 37th parallel between the 37th and 42nd eastern meridians. In the west, it almost surrounds the Turkish Hatay Province, partly following the course of the Orontes River and reaching the Mediterranean coast at the foot of Jebel Aqra.