The Finnish national road 51 (Finnish: Kantatie 51; Swedish: Stamväg 51) is the 2nd class main route between the major cities of Helsinki and Raseborg in southern Finland.^[1] It runs from Ruoholahti in Helsinki and passes through Espoo to Kirkkonummi as a motorway^[2] called Länsiväylä (Swedish: Västerleden), where it continues to Karis in Raseborg as a smaller road.

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Quick Facts Highway 51, Route information ...

Highway 51
Kantatie 51 (Finnish) Stamväg 51 (Swedish)
Kantatie 51, Stamväg 51
Route information
Maintained by the Finnish Transport Agency
Length	74 km (46 mi)
Major junctions
From	Helsinki
To	Raseborg
Location
Country	Finland
Major cities	Espoo
Highway system
Highways in Finland

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The road passes through the following localities:

• Helsinki (Ruoholahti and Lauttasaari)
• Espoo (Keilaniemi, Matinkylä and Nöykkiö)
• Kirkkonummi (Sarsvik, Jorvas, Kirkkonummi, and Vuohimäki)
• Siuntio (Fågelvik)
• Ingå (Degerby and Ingå)
• Raseborg) (Svarvarböle and Karis)