The Bug or Western Bug is a major river in Central Europe that flows through Belarus, Poland, and Ukraine, with a total length of 774 kilometres. A tributary of the Narew, the Bug forms part of the border between Belarus and Poland for 178 kilometres and part of the border between Ukraine and Poland for 185 kilometres.
Country: Poland, Belarus, Ukraine
Voivodeship Region Oblast: Podlaskie, Mazovian, Lublin, Brest, Lviv
Cities: Sheptytskyi, Sokal, Włodawa, Brest, Drohiczyn, Wyszków, Serock
Mouth: Narew
Length: 774 km (481 mi)
Basin size: 38,712 km² (14,947 sq mi)
Progression: Narew→ Vistula→ Baltic Sea