R21 highway (Russia)

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Federal Highway R21
Федеральная автомобильная дорога Р21
Kola Highway
Route information
Part of E105
Length	1,592 km (989 mi)
Existed	1986–present
History	Was M18 from 1986–2018
Major junctions
North end	Norwegian border near Borisoglebsky
South end	Moskovsky Prospekt in St. Petersburg
Location
Country	Russia
Highway system
Russian Federal Highways

The R21 highway (in Cyrillic Р21), also known as the Kola Motorway, is a major highway in Russia, running from Saint Petersburg to Murmansk. The highway is part of European route E105 and is the main transportation route by road in the Republic of Karelia and the Murmansk Oblast. Its length is 1592 kilometers. Before 2018, the R21 was designated as M18.

The R21 highway runs from Saint Petersburg, south of Lake Ladoga to Petrozavodsk, Kondopoga, Medvezhyegorsk, Segezha, Kem, Loukhi, Kandalaksha, Polyarnye Zori, Monchegorsk, Olenegorsk, Kola and ends in Severomorsk. It passes the Arctic Circle a couple of kilometers south of the border of Karelia and the Murmansk oblast, north of Loukhi.

In the Republic of Karelia, the landscape through which the R21 runs is mainly forest (birches), rivers and lakes. In the Murmansk Oblast, the highway runs for the most part through the Kola Peninsula, a severely polluted area. The landscape here is more open and consists partly of half-tundra.

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