Finnish national road 4 (Finnish: Valtatie 4 or Nelostie; Swedish: Riksväg 4 or Riksfyran; also known as Lahti Highway (Finnish: Lahdenväylä; Swedish: Lahtisleden) in the Helsinki Metropolitan Area) is a highway in Finland. It is the main route from Helsinki to Northern Finland and a major road link in the country. It runs from Erottaja in Helsinki to Sami Bridge in Utsjoki. The road is 1,295 kilometres (805 mi) long, making it Finland's longest highway. The road is also part of the European route E75 and of TERN; the section between Oulu and Kemi is part of the European route E8.
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👉 Finnish national road 4 in the context of Sodankylä
Sodankylä (Finnish: [ˈsodɑŋˌkylæ]; Northern Sami: Soađegilli [ˈso̯ɑðeˌkilːiː]; Inari Sami: Suáđigil; Skolt Sami: Suäʹđjel) is a municipality of Finland. It is located in the region of Lapland, and lies at the northern end of Highway 5 (E63) and along Highway 4 (E75). The Kitinen River flows near the center of Sodankylä. Its neighbouring municipalities are Inari, Kemijärvi, Kittilä, Pelkosenniemi, Rovaniemi, and Savukoski. The municipality has two official languages: Finnish and Northern Sami.
The municipality has a population of 8,067, (30 June 2025) which makes it the fourth largest municipality in Lapland after Rovaniemi, Tornio and Kemi, and at the same time the largest municipality in population that does not use the title of city or town. It covers an area of 12,415.50 square kilometres (4,793.65 sq mi) of which 718.65 km (277.47 sq mi) is water, making it the second largest municipality in Finland in terms of area, right after its neighboring municipality of Inari. The population density is 0.69 inhabitants per square kilometre (1.8/sq mi).
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Finnish national road 4 in the context of Mäntsälä
Mäntsälä (Finnish pronunciation: [ˈmæntsælæ]) is a municipality in the province of Southern Finland, and is part of the Uusimaa region. It has a population of 20,966(30 June 2025) and covers an area of 596.11 square kilometres (230.16 sq mi) ofwhich 15.26 km (5.89 sq mi)is water. The population density is36.1 inhabitants per square kilometre (93/sq mi). The municipality is unilingually Finnish. Mäntsälä is one of three municipalities in the Uusimaa region that do not have a Swedish name; the others are Nurmijärvi and Askola.
Mäntsälä lies about 60 kilometres (40 mi) north of Helsinki, the capital of Finland. During the last few years, the population of Mäntsälä has been one of the most rapidly increasing in Finland. A new railway, the Kerava–Lahti railway line, was built between Kerava and Lahti with passenger traffic starting on 4 September 2006 from Mäntsälä railway station. Helsinki is about 40 minutes away, and Lahti even closer. Highway 4 (E75) connecting both cities passes through Mäntsälä.
Finnish national road 4 in the context of Lahti
Lahti (Finnish pronunciation: [ˈlɑhti], lit. 'bay'; Swedish: Lahtis) is a city in Finland and the regional capital of Päijät-Häme. It is located in the Finnish Lakeland. The population of Lahti is approximately 122,000, while the sub-region has a population of approximately 205,000. It is the 9th most populous municipality in Finland, and the sixth most populous urban area in the country.
Lahti is situated on a bay at the southern end of lake Vesijärvi about 100 kilometres (60 mi) north-east of the capital city Helsinki, 38 kilometres (24 mi) south-west of Heinola and 74 kilometres (46 mi) east of Hämeenlinna, the capital of the region of Kanta-Häme. Lahti is situated at the intersection of Highway 4 (between Helsinki and Jyväskylä) and Highway 12 (between Tampere and Kouvola), which are the most significant main roads of Lahti. Its neighboring municipalities are Asikkala, Heinola, Hollola, Iitti and Orimattila.