List of longest highways

This article lists the world's longest road routes that are either officially numbered or otherwise known under a single name. Some of the roads may still be partially planned or under construction.

Longest highways overall +NameLengthLocationFromToNotesHighway 1 AustraliaLoop routeLongest route within a single country by joining partial roads. Not a straight single road.Asian Highway 2AsiaDenpasar, Indonesia Khosravi, Iran Broken up by Bali Strait, Java Sea, and Karimata Strait.Pan-American HighwayAmericasPrudhoe Bay, Alaska, United States Yaviza, Panama Together with the southern section, the entire length is 30,000km, however, the roads are not connected due to the 100km Darién GapTrans-Siberian HighwayRussiaSt. Petersburg Vladivostok Longest non-loop route within a single country.Tripoli–Cape Town HighwayAfricaTripoli, Libya Cape Town, South Africa Longest Trans-African highway. Large sections remain missing.Asian Highway 6EurasiaBusan, South Korea Belarusian border, Russia Asian Highway 5EurasiaShanghai, China Bulgarian border, Turkey Cairo–Cape Town HighwayAfricaCairo, Egypt Cape Town, South Africa Longest fully traversable Trans-African highway.National Highway 219ChinaKom-Kanas, Xinjiang Dongxing, Guangxi Longest route in China. Parts still under construction.Asian Highway 9EurasiaSt. Petersburg, Russia Lianyungang Pan-American HighwayAmericasBarranquilla, Colombia Puerto Montt or Quellón, Chile Together with the northern section, the entire length is 30,000km, however, the roads are not connected due to the 100km Darién GapNational Highway 331ChinaDandong, Liaoning Altay, Xinjiang Parts still under construction.European route 40EurasiaCalais, France Ridder, Kazakhstan Longest E-road.Cairo–Dakar HighwayAfricaCairo, Egypt Dakar, Senegal Part of Trans-African highway networkEuropean route 60EurasiaBrest, France Irkeshtam, Kyrgyzstan National Highway 228ChinaDandong, Liaoning Dongxing, Guangxi Parts still under constructionTrans-Canada HighwayCanadaVictoria and Haida Gwaii, British Columbia St. John's, Newfoundland and Labrador Longest road route in Canada.Asian Highway 3AsiaUlan-Ude, Russia Chiang Rai, Thailand Divided into two unconnected sections.European route 45EuropeAlta, Norway Gela, Sicily, Italy Longest north–south European route. Golden QuadrilateralIndiaLoop route in India Longest road route in India.U.S. Route 20United StatesNewport, Oregon Boston, Massachusetts Longest road in the United States.Ruta Nacional 40ArgentinaCape Virgenes, Santa Cruz Province, Argentina La Quiaca, Provincia de Jujuy At km 4601 is the highest road outside the Himalayas with 5000 msal and the longest in South America.Interstate 90United StatesSeattle, Washington Boston, Massachusetts Longest Expressway.BR-116BrazilFortaleza-CE Jaguarão-RS Longest highway in Brazil.BR-101BrazilTouros-RN São José do Norte-RS Second longest highway in Brazil.National Highway 274,112 km (2,555 mi)IndiaPorbandar, Gujarat Silchar, Assam Longest national highway of IndiaNational Highway 443,717 km (2309 mi)IndiaSrinagar, Jammu and Kashmir Kanyakumari, Tamil Nadu North - South national highway in India.Grand Trunk Road3,655 km (2272 mi)AsiaKabul, AfghanistanTeknaf, Cox Bazar, BangladeshOldest highway in Asia and the world.Chile Route 5ChilePeruvian border at Arica Puerto Montt Part of the Pan-American Highway.Pan-Philippine Highway (AH26)PhilippinesLaoag Zamboanga Longest highway in Southeast Asia.National route 1DR CongoBoma Lubumbashi Longest national highway in Africa.

Longest controlled-access highways NameLengthLocationFrom 1From 2 Note Interstate 90United StatesSeattle, WashingtonBoston, MassachusettsLongest Interstate Highway in the United StatesInterstate 80United StatesSan Francisco, CaliforniaTeaneck, New JerseyG30 Lianyungang–Khorgas ExpresswayChinaLianyungang, JiangsuKhorgas, XinjiangLongest expressway in ChinaInterstate 40United StatesBarstow, CaliforniaWilmington, North CarolinaInterstate 10United StatesSanta Monica, CaliforniaJacksonville, FloridaG6 Beijing–Lhasa ExpresswayChinaBeijingLhasa, TibetSections between Nagqu and Golmud still incompleteG15 Shenyang–Haikou ExpresswayChinaShenyang, LiaoningHaikou, HainanG25 Changchun–Shenzhen ExpresswayChinaChangchun, JilinShenzhen, GuangdongG7 Beijing–Ürümqi ExpresswayChinaBeijingÜrümqi, XinjiangInterstate 70United StatesCove Fort, UtahBaltimore, MarylandTrans Sumatra Toll Road2,048 km (1,272 mi)IndonesiaBanda AcehBakauheniIt is expected to be completed in 2029. Length is the total planned network length.North–South expresswayVietnamHanoiCần ThơMajority of the route still planned or under construction

See also List of countries by road network size List of longest ring roads

References