The Sultans Trail is a long-distance hiking and cycling trail from Vienna to Istanbul. It is 2.500 kilometres long (1,550 mi). The trail passes through Austria, Slovakia, Hungary, Croatia, Serbia, Bulgaria, Greece, and Turkey.

The Sultans Trail is inspired by an event that took place in the year 1529. That year siege was laid on Vienna by Sultan Süleyman, also known as Kanuni Sultan Süleyman or Suleiman the Lawgiver and Suleiman the Magnificent. He led the armies of his Ottoman Empire to conquer Belgrade and Budapest before he set out for Vienna, where his invasion stopped at the Siege of Vienna in 1529.