European route E661

E661 shield
E661
Route information
Length447 km (278 mi)
Major junctions
North endLake Balaton (Hungary)
Major intersectionsMarcali,
Nagyatád,
Barcs,
Grubišno Polje,
Daruvar,
Pakrac,
Gradiška,
Banja Luka,
Donji Vakuf,
Travnik
South endZenica
Location
CountriesHungary,
Croatia,
Bosnia and Herzegovina
Highway system

European route E 661 is a part of the inter-European road system. This Class B north–south route is 449 kilometres (279 mi) long and it connects Lake Balaton in Hungary via western Slavonia in Croatia with Bosanska Krajina and central Bosnia.