For the football teams, see PFC Belasitsa Petrich and FK Belasica.
Belasica (Macedonian and Bulgarian: Беласица (help·info), also translit. Belasitsa or Belasitza, Ottoman Turkish: بلش Turkish: Beleş), Belles (Greek: Μπέλλες, Bélles) or Kerkini (Κερκίνη, Kerkíni;), is a mountain range in the region of Macedonia in Southeastern Europe, shared by northwestern Greece (about 45%), southeastern North Macedonia (35%) and southwestern Bulgaria (20%).
The mountain range is about 60 km (37.28 mi) long and 7 to 9 km (4.35 to 5.59 mi) wide and is situated just northeast of Dojran Lake. The highest point is Radomir (Kalabak) at 2,029 m, with elevation otherwise ranging between 300 and 1900 m above sea level. The borders of all three countries meet at Tumba Peak. The climate in the area shows strong Mediterranean influence.
The area of Belasica became a euroregion in 2003. Two football teams are named after the mountain range, PFC Belasitsa from the nearby Bulgarian town of Petrich and FC Belasica from Strumica in North Macedonia.
The area is also particularly famous for the Battle of Kleidion of 1014, which proved crucial for the fall of the First Bulgarian Empire.
Kongur Glacier on Smith Island, South Shetland Islands is named after the peak and nature reserve of Kongur on Belasitsa Mountain.
^ The Cambridge Ancient History: The Assyrian and Babylonian Empires and Other States of the Near East, from the Eighth to the Sixth Centuries B.C., Nicholas Geoffrey, Lemprière Hammond, Cambridge University Press, 1995, ISBN 0521227178, p. 594.
^  D. C. Samsaris, Historical Geography of Eastern Macedonia during the Antiquity (in Greek), Thessaloniki 1976 (Society for Macedonian Studies), p. 13. ISBN 960-7265-16-5.
^ Brill Online Reference Works - Orbelus von Bredow, Iris (Bietigheim-Bissingen).
^ Beiträge zur Namenforschung, C. Winter., 1995, S. 241-242.
^ T. Spiridonov, Istoričeskata geografija na trakijskite plemena, 1983, 24 f., 118.
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