Asian Highway 1 (AH1) is the longest east–west route of the Asian Highway Network, running 20,557 km (12,774 mi) from Tokyo, Japan via the Korean Peninsula (South Korea and North Korea), China (Mainland China and Hong Kong), Mainland Southeast Asia (Vietnam, Cambodia, Thailand, and Myanmar), South Asia (India, Bangladesh, and Pakistan), and the Iranian Plateau (Afghanistan and Iran) to the international border between Turkey and Bulgaria west of Istanbul where it joins the 6,102-km European route E80, running all the way to Lisbon, Portugal.
Associated routes
From east to west, the primary corridors include:
Japan
The 1,200-kilometre (750 mi) section in Japan was added to the system in November 2003. It runs along the following tolled expressways:
Shuto Expressway C1 Inner Circular Route, Edobashi JCT to Tanimachi JCT via Takebashi JCT
Shuto Expressway Route 3 Shibuya Line, Tanimachi JCT to Yoga Exit (Tokyo Interchange)
Tōmei Expressway, Tokyo Interchange to Komaki- Meishin Expressway, Komaki to Suita via Kyoto
Chūgoku Expressway, Suita to Kobe
San'yō Expressway, Kobe to Yamaguchi via Hiroshima- Chūgoku Expressway, Yamaguchi to Shimonoseki
- Kanmon Bridge, Shimonoseki to Kitakyushu
Kyushu Expressway, Kitakyushu to Fukuoka
Fukuoka Expressway Route 4
Fukuoka Expressway Route 1
Camellia Line ferry to Busan, South Korea.
From Fukuoka, the Japan–Korea Undersea Tunnel has been proposed to provide a fixed crossing.
South Korea
The section in South Korea mainly follows the Gyeongbu Expressway. The Highway Boundary of South and North Korea.
Busan City Route 71: Busan-Centre - Busan-Dong-gu
Busan City Route 11: Busan-Dong-gu - Busan-Geumjeong-gu
Gyeongbu Expressway: Busan-Geumjeong-gu - Gyeongju - Daegu - Daejeon - Seoul-Seocho-gu
Seoul City Route 41: Seoul-Seocho-gu - Seoul-Gangnam-gu - Seoul-Yongsan-gu
Namsan 1st tunnel: Seoul-Yongsan-gu - Seoul-Jung-gu
Seoul City Route 21: Seoul-Jung-gu - Seoul-Eunpyeong-gu
National Route 1: Seoul-Eunpyeong-gu - Panmunjom
North Korea
- 1 P'anmunjŏm - Kaesŏng
- Pyongyang-Kaesong Motorway: Kaesŏng - P'yŏngyang
- 1 Pyongyang–Sinuiju Motorway: P'yŏngyang - Sinŭiju
China
- Within Dandong: New Yalu River Bridge - Guomen Avenue -
S326 (Dandong Xinqu IC) - 
G11 Zhangjiabao JCT - 
G1113 Dandong JCT - G1113: Dandong - Shenyang
- Within Shenyang:
G1501: Xiashengou JCT - Jinbaotai JCT - Beiliguan JCT 
G1: Shenyang - Jinzhou - Beijing- Within Beijing:
G4501: Shiyuan JCT - Maju JCT - Shuangyuan JCT - Fangshan Liyuan JCT 
G4: Beijing - Shijiazhuang - Zhengzhou - Xinyang - Wuhan - Changsha - Xiangtan - Guangzhou- Within Guangzhou:
G1508: Taihe JCT - Longshan JCT - Leping JCT - Hengjiang JCT 
G80: Guangzhou - Nanning
G7211: Nanning - Youyiguan
Guangzhou - Shenzhen branch
- G1508: Taihe JCT - Guantian JCT
Guangdong S3: Guangzhou - Shenzhen (Shenzhen Bay Port)
Hong Kong
Route 10: Shenzhen Bay Port - Shenzhen Bay Bridge - Lam Tei
Route 9: Lam Tei - Yuen Long Highway - San Tin Highway - Lok Ma Chau Control Point
Vietnam
: Hữu Nghị Quan - Đồng Đăng
: Lạng Sơn - Bắc Ninh - Hanoi
: Hanoi- : Hanoi - Ninh Bình - Thanh Hóa - Nghệ An - Hà Tĩnh - Quảng Trị - Huế - Đà Nẵng - Quảng Ngãi - Gia Lai - Đắk Lắk - Khánh Hòa - Lâm Đồng - Đồng Nai
-
: Đồng Nai - Phú Hữu
- Connection to HCMC Ring Road 2 (Phú Hữu to High-Tech Park) (temporary)
- Connection to
(High-Tech Park to Station 2) (temporary)
- : Ho Chi Minh
: Ho Chi Minh - Mộc Bài
In future,
- (Hữu Nghị Quan - Chi Lăng)
(Long Trường - Tân Thạnh Đông and Vĩnh Thanh - Bến Lức - Tân Thạnh Đông)
(HCMC - Mộc Bài)
will become part of AH1 instead of the current National Highway 1 and National Highway 22.
Cambodia
Thailand
Route 33: Aranyaprathet - Kabin Buri - Hin Kong
Route 1: Hin Kong - Bang Pa In
Route 32: - Bang Pa In - Chai Nat (Concurrent with 
AH2)- Route 1: Chai Nat - Tak (Concurrent with AH2)
Route 12: Tak - Mae Sot
Myanmar
- National Highway 8: Myawaddy - Payagyi
- Branch Yangon–Mandalay Expressway: Payagyi - Yangon
- Yangon–Mandalay Expressway: Payagyi - Meiktila - Mandalay
- National Highway 7: (Concurrent with
AH2): Mandalay - Tamu
India (East)
NH 102: Moreh - Imphal
NH 2: Imphal - Viswema - Kohima
NH 29: Kohima - Chümoukedima - Dimapur - Doboka
NH 129: Dimapur- Silonijan - Rangajan - Numaligarh
NH 27: Doboka - Nagaon - Jorabat
NH 6: Jorabat - Shillong
NH 206: Shillong - Dawki
Bangladesh
N2: Tamabil, Sylhet - Sylhet - Kanchpur - Dhaka
N8: Dhaka-Mawa-Bhanga Expressway
N804: Bhanga, Faridpur - Alipur, Faridpur
N803: Alipur, Faridpur - Goalchamot, Faridpur
N7: Faridpur - Jashore
N706: Jashore - Benapole
India (West)
NH 112: Petrapole - Barasat
NH 12: Barasat - Kolkata Airport
NH 19: Dankuni - Bardhaman - Durgapur -Asansol - Dhanbad -Barhi - Mohania - Varanasi - Allahabad - Kanpur - Agra - New Delhi
NH 44/ Grand Trunk Road: New Delhi - Sonipat - Ambala - Jalandhar
NH 3/ Grand Trunk Road: Jalandhar - Amritsar - Attari
Pakistan
- Grand Trunk Road, Wagah — Lahore
M-2: Lahore — Islamabad
M-1: Islamabad — Peshawar
N-5: Peshawar — Torkham
Afghanistan
- NH08: Jalalabad - Kabul
- NH0101 Ring Highway: Kabul - Kandahar
- NH0102 Ring Highway: Kandahar - Delaram - Herat
- NH63: Herat - Islam Qala
Iran
: Islam Qala - Taybad
: Taybad- Sang Bast
: Sang Bast - Nishapur - Sabzevar - Shahrood - Damghan - Semnan - Deh Namak
: Deh Namak - Aradan- : Aradan - Tehran
- : Tehran - Qazvin - Zanjan - Tabriz - Sufian
: Sufian - Bazargan
Turkey
E80 / D.100 Road D100: Gürbulak - Doğubayazıt - Aşkale - Refahiye
E88 / D.200 Road D200: Refahiye - Sivas - Ankara
E90 / E89 / O-20: Ankara
E89 / E80 / O-4 Otoyol 4: Ankara - Gerede - Istanbul
E80 / O-7 Otoyol 7: Istanbul
E80 / O-3 Otoyol 3: Istanbul - Edirne - - Kapıkule ( Bulgaria, 
Maritsa motorway)
Connection to E80
The route AH1 links to 
E80 in Turkey. The E80 continues in the E-road network from the border station at Gürbulak in Turkey to Istanbul followed by E80 highways to Kapitan Andreevo/Kapıkule, Sofia, Niš, Pristina, Dubrovnik, Pescara, Rome, Genoa, Nice, Toulouse, Burgos, Valladolid, Salamanca and finally Lisbon on the Atlantic Ocean.
