The R21 highway (in Cyrillic Р21), also known as the

Kola KOLA (99.9 FM) is a commercial radio station licensed to Redlands, California, and broadcasting to the Riverside-San Bernardino-Inland Empire radio market. It is owned by the Anaheim Broadcasting Corporation and it airs a classic hits radio for ...

Motorway, is a major

highway A highway is any public or private road or other public way on land. It is used for major roads, but also includes other public roads and public tracks. In some areas of the United States, it is used as an equivalent term to controlled-access ...

Russia Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental country spanning Eastern Europe and North Asia, Northern Asia. It is the List of countries and dependencies by area, largest country in the ...

, running from

Saint Petersburg Saint Petersburg ( rus, links=no, Санкт-Петербург, a=Ru-Sankt Peterburg Leningrad Petrograd Piter.ogg, r=Sankt-Peterburg, p=ˈsankt pʲɪtʲɪrˈburk), formerly known as Petrograd (1914–1924) and later Leningrad (1924–1991), i ...

Murmansk Murmansk (Russian: ''Мурманск'' lit. "Norwegian coast"; Finnish: ''Murmansk'', sometimes ''Muurmanski'', previously ''Muurmanni''; Norwegian: ''Norskekysten;'' Northern Sámi: ''Murmánska;'' Kildin Sámi: ''Мурман ланнҍ'') i ...

. The highway is part of

European route E105 E105 is part of the International E-road network, which is a series of main roads in Europe. It is a north–south reference road, meaning it crosses Europe from north to south and other E-road numbers have been calculated based on these referenc ...

and is the main transportation route by road in the

Republic of Karelia The Republic of Karelia (russian: Респу́блика Каре́лия, Respublika Kareliya; ; krl, Karjalan tašavalta; ; fi, Karjalan tasavalta; vep, Karjalan Tazovaldkund, Ludic: ''Kard’alan tazavald''), also known as just Karelia (rus ...

and the

Murmansk Oblast Murmansk Oblast (russian: Му́рманская о́бласть, p=ˈmurmənskəjə ˈobləsʲtʲ, r=Murmanskaya oblast, ''Murmanskaya oblast''; Kildin Sami: Мурман е̄ммьне, ''Murman jemm'ne'') is a federal subject (an oblast) of ...

. Its length is 1592 kilometers. Before 2018, the R21 was designated as M18.

Route

The R21 highway runs from Saint Petersburg, south of

Lake Ladoga Lake Ladoga (; rus, Ла́дожское о́зеро, r=Ladozhskoye ozero, p=ˈladəʂskəjə ˈozʲɪrə or rus, Ла́дога, r=Ladoga, p=ˈladəɡə, fi, Laatokka arlier in Finnish ''Nevajärvi'' ; vep, Ladog, Ladoganjärv) is a fresh ...

Petrozavodsk Petrozavodsk (russian: Петрозаводск, p=pʲɪtrəzɐˈvotsk; Karelian, Vepsian and fi, Petroskoi) is the capital city of the Republic of Karelia, Russia, which stretches along the western shore of Lake Onega for some . The population ...

Kondopoga Kondopoga (russian: Ко́ндопога; krl, Kondupohju; fi, Kontupohja) is a town and the administrative center of Kondopozhsky District of the Republic of Karelia, Russia, located by the northern tip of the Kondopoga Bay of Lake Onega, nea ...

Medvezhyegorsk Medvezhyegorsk (russian: Медвежьего́рск; krl, Karhumägi; fi, Karhumäki) is a town and the administrative center of Medvezhyegorsky District of the Republic of Karelia, Russia. Population: 15,800 (1959). History A village in ...

Segezha Segezha (russian: Сеге́жа; krl, Segeža; fi, Sekehe) is a town and the administrative center of Segezhsky District of the Republic of Karelia, Russia, located north of Petrozavodsk on the Segezha River and on the western shore of La ...

, Kem,

Loukhi Loukhi (russian: Лоухи; krl, Louhi) is an urban locality (an urban-type settlement) and the administrative center of Loukhsky District in the Republic of Karelia, Russia, located on the shore of Lake Panovo, north of Petrozavodsk, the c ...

Kandalaksha Kandalaksha (russian: Кандала́кша; fi, Kantalahti, also ''Kandalax'' or ''Candalax'' in the old maps; krl, Kannanlakši; sms, Käddluhtt) is a town in Kandalakshsky District of Murmansk Oblast, Russia, located at the head of Kandal ...

Polyarnye Zori Polyarnye Zori (russian: Поля́рные Зо́ри, lit. ) is a town in Murmansk Oblast, Russia, located on the Niva River, Lake Imandra, and Lake Pinozero, south of Murmansk. The nearest settlements to Polyarnye Zory are: Zasheek (3km), P ...

Monchegorsk Monchegorsk (russian: Мончего́рск) is a town in Murmansk Oblast, Russia, located on the Kola Peninsula, south of Murmansk, the administrative center of the oblast. Population: 52,242 ( 2002 Census); 68,652 ( 1989 Census). Name The ...

, Olenegorsk,

and ends in

Severomorsk Severomorsk (russian: Северомо́рск), known as Vayenga () until April 18, 1951, is a closed town in Murmansk Oblast, Russia. Severomorsk is the main administrative base of the Russian Northern Fleet. The town is located on the coast ...

. It passes the

Arctic circle The Arctic Circle is one of the two polar circles, and the most northerly of the five major circles of latitude as shown on maps of Earth. Its southern equivalent is the Antarctic Circle. The Arctic Circle marks the southernmost latitude at w ...

a couple of kilometers south of the border of Karelia and the Murmansk oblast, north of Loukhi.

Landscape

In the Republic of Karelia, the landscape through which the R21 runs is mainly forest (

birch A birch is a thin-leaved deciduous hardwood tree of the genus ''Betula'' (), in the family Betulaceae, which also includes alders, hazels, and hornbeams. It is closely related to the beech-oak family Fagaceae. The genus ''Betula'' contains 30 ...

es), rivers and lakes. In the Murmansk Oblast, the highway runs for the most part through the

Kola Peninsula sjd, Куэлнэгк нёа̄ррк , image_name= Kola peninsula.png , image_caption= Kola Peninsula as a part of Murmansk Oblast , image_size= 300px , image_alt= , map_image= Murmansk in Russia.svg , map_caption = Location of Murmansk Oblas ...

, a severely polluted area. The landscape here is more open and consists partly of half-

tundra In physical geography, tundra () is a type of biome where tree growth is hindered by frigid temperatures and short growing seasons. The term ''tundra'' comes through Russian (') from the Kildin Sámi word (') meaning "uplands", "treeless moun ...

. Roads within the Arctic Circle Roads in Saint Petersburg Roads in Leningrad Oblast Roads in the Republic of Karelia Roads in Murmansk Oblast {{Russia-road-stub