Its terminals were Lashio, Burma, in the south and Kunming, China, the capital of Yunnan province in the north.
Preventing the flow of supplies on the road helped motivate the occupation of Burma by the Empire of Japan in 1942 during World War II.
Supplies from San Francisco for example would land at Rangoon (now Yangon), moved by rail to Lashio where the road started in Burma, up steep gradients before crossing into China over the Wanding bridge.
The Chinese stretch of the road continued for some five hundred miles through rural Yunnan terrain before ending up in Kunming.
The Allies thereafter supplied China by air, flying "over The Hump" from India, which initially proved fatally dangerous and woefully inadequate, leading U.S. army general Joseph Stilwell to obsessively pursue the goal of reopening the Burma Road.