On January 12, Razlog Municipality welcomes an International Balloon Fiesta. At the festival of hot air balloons and motoparaplaners are included crews from Bulgaria, the Balkans and other countries. They perform demonstration flights over the Razlog valley.
During the balloon fiesta is provided a fixed elevation of 30 meters height. The program of the fest has traditionally provided free flights with hot air balloons, demonstration flights with various aircraft from light aviation, coupled balloon racing and a fire show (burner parade).