As of 2026-05-06, State road 16 tops the list with 953,770 km.
- #1 State road 16 — 953,770 km
road in Italy
source Wikidata - #2 Aomori Prefectural Road and Akita Prefectural Road Route 317 — 39,759 km
road in Aomori and Akita Prefecture, Japan
source Wikidata - #3 Akita Prefectural Road Route 54 — 25,928 km
road in Akita Prefecture, Japan
source Wikidata - #4 M33 motorway — 22,947 km
road in Hungary
source Wikidata - #5 Akita Prefectural Road Route 200 — 22,491 km
road in Akita Prefecture, Japan
source Wikidata - #6 Farm to Market Road 2161 — 20,569 km
state road in Carson County, Texas, United States
source Wikidata - #7 AH1 — 20,557 km
longest route of the Asian Highway Network, it connects Tokyo with Turkey–Bulgaria border
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, China, Mainland Southeast Asia, the South Asia, and the Iranian Plateau to the international border between Turkey and Bulgaria west of Istanbul where it joins European route E80, running all the way to Lisbon, Portugal. Read more on Wikipedia.
Wikidata - #8 State road 724 — 19,200 km
road in Italy
source Wikidata - #9 AH2 — 13,177 km
road in Southeast, South, Central and Western Asia
Asian Highway 2 (AH2) is a road in the Asian Highway Network running 13,107 kilometres (8,144 mi) from Denpasar, Indonesia to Merak, and Singapore to Khosravi, Iran. The route passes through 10 countries and is connected to M10 and M40 of the Arab Mashreq International Road Network. The route is as follows: Read more on Wikipedia.
Wikidata - #10 Tripoli–Cape Town Highway — 10,808 km
Trans-African road
The Tripoli–Cape Town Highway or TAH 3 is Trans-African Highway 3 in the transcontinental road network being developed by the United Nations Economic Commission for Africa (UNECA), the African Development Bank (AfDB), and the African Union. The route is 10,808 km (6,716 mi) long, has the longest missing links, and requires the most new road construction. Read more on Wikipedia.
Wikidata