Top 10 Longest Highways in the World 

Pan-American Highway 30,000 km United States to Argentina 

Asian Highway 1 20,557 km Turkey to Japan 

Highway 1 14,500 km Loop Route 

Asian Highway 2 13,177 km Indonesia to Iran

Trans-Siberian Highway 11,000 km St. Petersburg to Vladivostok

Asian Highway 6 10,475 km South Korea to Russia 

Asian Highway 5 10,380 km China to Turkey 

National Highway 219 10,000 km Xinjiang to Guangxi

National Highway 331 9,200 km Liaoning to Xinjiang

European route 40 8,690 km France to Kazakhstan