AH1
| Asian Highway 1 | ||||
|---|---|---|---|---|
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| Major junctions | ||||
| East end: | Tokyo, Japan | |||
| West end: | Istanbul, Turkey | |||
| Location | ||||
| Countries: | Tokyo, Japan via South Korea, North Korea, China, Hong Kong, Southeast Asia, Bangladesh, India, Pakistan, Afghanistan and Iran to the border between Turkey and Bulgaria west of Istanbul where it joins end-on with European route E80 east to Thailand, Micronesia, Indonesia, Australia, Papua New Guinea, Malaysia, Philippines, Taiwan | |||
| Highway system | ||||
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Asian Highway 1 (AH1) is the longest route of the Asian Highway Network, running 20,557 km (12,774 mi) from Tokyo, Japan via Korea, China, Hong Kong, Southeast Asia, Bangladesh, India, Pakistan, Afghanistan and Iran to the border between Turkey and Bulgaria west of Istanbul where it joins end-on with European route E80.
The 1200-kilometer section in Japan was added to the system in November 2003. It runs along the following tolled expressways:
From Fukuoka, AH1 takes the Camellia Line ferry to Busan, South Korea. The Japan–Korea Undersea Tunnel has been proposed to provide a fixed crossing.
The section in South Korea mainly follows the Gyeongbu Expressway. The Highway Boundary of South and North Korea.
The route AH1 is also marked as 
in Turkey. The E80 continues in the E-road network from the border station at Kapitan Andreevo/Kapıkule to Sofia in Bulgaria, followed by E80 highways to Niš, Pristina, Dubrovnik, Pescara, Rome, Genoa, Nice, Toulouse, Burgos, Valladolid, Salamanca and finally Lisbon on the Atlantic Ocean.
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