The Bilo Mountains are a ridge or small range in the Balkan Mountains of western Bulgaria, in Sofia Province. They are located northeast of Sofia about 50 kilometres (31 mi). and about 9 kilometres (6 mi) southwest of Botevgrad, near the town of Pravets. Bilo (Било) in Bulgarian means ridge.
Coordinates: 42°52′N 023°54′E / 42.867°N 23.900°E