China National Highway 317


China National Highway 317 runs broadly west to east from Chengdu, Sichuan to Gar County, Ngari Prefecture, Tibet. It is 2,028 kilometres in length and forms an important transportation route in Tibet. As of 2017, Highway 317 passes through the highest vehicular tunnel in the world in the Chola Mountains of Dêgê County. Part of the route is concurrent with the Sichuan-Tibet Highway.

Route and distance

PlaceLocation
Chengdu, Sichuan0
Pi County, Sichuan20
Dujiangyan City, Sichuan54
Wenchuan County, Sichuan149
Li County, Sichuan206
Barkam County, Sichuan394
Zhaggo County, Sichuan661
Garzê County, Sichuan756
Dêgê County, Sichuan960
Jomda County, Tibet1070
Qamdo County, Tibet1298
Riwoqê County, Tibet1403
Dêngqên County, Tibet1546
Baqên County, Tibet1782
Sog County, Tibet1812
Nagqu County, Tibet2043