Bistritsa or Vitoshka Bistritsa , is a river in western Bulgaria

Bulgaria

Bulgaria , officially the Republic of Bulgaria , is a parliamentary democracy within a unitary constitutional republic in Southeast Europe. The country borders Romania to the north, Serbia and Macedonia to the west, Greece and Turkey to the south, as well as the Black Sea to the east...

, tributary of Iskar River

Iskar

The Iskar is, with a length of 368 km, the longest river that runs solely in Bulgaria, and a tributary of the Danube.The Iskar is formed by three rivers, the Cherni Iskar, Beli Iskar and Levi Iskar , with the source being accepted to be the Prav Iskar, a tributary of the Cherni Iskar...

. Flows from the eastern slopes of Golyam Rezen Peak

Golyam Rezen

Golyam Rezen is a peak on Vitosha Mountain in Bulgaria. Rising to 2,277 m, the peak is second to the mountain's summit Cherni Vrah situated 900 m to the west. Golyam Rezen hosts an Air Traffic Services facility, as well as military communications installations...

 on Vitosha Mountain

Vitosha

Vitosha is a mountain massif, on the outskirts of Sofia, the capital of Bulgaria. Vitosha is one of the tourists symbols of Sofia and the closest site for hiking, alpinism and skiing. Convenient bus lines and rope ways render the mountain easily accessible. Vitosha has the outlines of an enormous...

, crossing Bistrishko Branishte

Bistrishko Branishte

Bistrishko Branishte is a nature reserve on Vitosha Mountain in Bulgaria comprising the eastern slopes of Golyam Rezen , Malak Rezen and Skoparnik Peaks, the northern slopes of Golyam Kupen Peak , and the upper valleys of Vitoshka Bistritsa River and Yanchevska River...

 Nature Reserve, where it forms a small but beautiful waterfall Samokovishteto, then crossing villages of Bistritsa

Bistritsa, Sofia

Bistritsa or Bistrica is a large village in the Pancharevo municipality, located at 15 km to the south of the capital Sofia. it has 4,004 inhabitants....

 and Pancharevo

Pancharevo

Pancharevo is a suburban district located in the south-eastern parts of the Capital Municipality. it has 26,000 inhabitants. It is the largest region in Sofia with total area of 364,7 km²...

 to flow into Lake Pancharevo

Lake Pancharevo

Lake Pancharevo is an artificial lake in western Bulgaria, at the end of the Pancharevo Gorge of the Iskar River, located at 600 m above sea level between the Vitosha and Lozenska mountains...

, near Sofia

Sofia

Sofia is the capital and largest city of Bulgaria and the 12th largest city in the European Union with a population of 1.27 million people. It is located in western Bulgaria, at the foot of Mount Vitosha and approximately at the centre of the Balkan Peninsula.Prehistoric settlements were excavated...

. Additional charm of the area offer several artificial waterfalls in the lower reaches of the river.