| 134.5 km|
P42 P42 highway|A4 highway (Lithuania) Wikipedia
The A4 highway is a highway in Lithuania (Magistraliniai keliai). It runs from Vilnius to the Belarus border, near Druskininkai. From there the road continues to Grodno as P42. The length of the road is 134.46 km.
Most of the road has one lane each way and a 90 km/h speed limit. It is the main road connecting Vilnius with the Dzūkija region.