Republican Road II-86 (Bulgarian: Републикански път II-86) is a 2nd class road in Bulgaria, running in general direction north–south through the territory of Plovdiv and Smolyan Provinces.[1] Its length is 147.4 km.
At the intersection for the Pamporovo ski resort it passes though the Pozhen Saddle (1,430 m) and after a steep descend to the village of Sokolovtsi[2] it reaches the valley of Byala reka, a tributary of the Cherna. From there, the II-86 continues south through the Byala reka valley, passing through the village of Bostina and reaching the Ustovo neighbourhood of the city of Smolyan. From Ustovo the road turns east and for 16.8 km follows the valley of the Cherna through the villages of Vlahovo, Podvis, Rovina, Taran and Ravnishta, then turns south through Srednogortsi,[2] crosses a short watershed and enters the valley of the river Arda. The road follows the valley upstream to the town of Rudozem and then through the valley of the river Chepinska reka it ascends to the Bulgaria–Greece border and the border checkpoint Rudozem–Xanthi.[2]