Vilnia. The Vilnia (also Vilnel??; Belarusian: ????????????, Vilnia [??v??il??n??a]; Polish: Wilejka, Wilenka) is a river primarily running through Eastern Lithuania. Its source is near the villages of Kiem??nai and Vind??i??nai, 6 km south of ??umskas, nearby to the A3???M7 Medininkai???Kamenny Log border crossing complexes of the Belarus???Lithuania border for approximately 12 kilometers. Geography The Vilnia is 79.6 km long and its basin covers 624 sq. km. The river's steepness is 124.6 metres from the source to the mouth. For 13 km, its flow marks the Belarus-Lithuania border, and the remaining 69 km are in Lithuania where it flows into the Neris River at Vilnius. Eventually, its waters, via the Neris draining into the Neman River, reach the Baltic Sea. Its confluence with the Neris lies within the city of Vilnius, and the river's name is regarded to have been the source...