Ring III

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Highway 50
Kantatie 50 (Finnish) Stamväg 50 (Swedish)
Ring III Kehä III Ring III
Route information
Part of E18
Length	46 km (29 mi)
Existed	1962–1972–present
Location
Country	Finland
Major cities	Kirkkonummi, Espoo, Vantaa, and Helsinki
Highway system
Highways in Finland

Kehä III ("ring three", National road 50; or Finnish: Kehä III or Kantatie 50; Swedish: Ring III or Stamväg 50)^[1] is an important highway in Southern Finland. It is the outermost of the three beltways in Helsinki capital region, and the first one to be built. It lies across the four Finnish municipalities of Kirkkonummi, Espoo, Vantaa and Helsinki. Shaped like an arch, the road is 46 kilometres (29 mi) long, of which only a very small fraction passes within the borders of Helsinki itself.