| Country: | CHN |
| Type: | G |
| Route: | 317 |
| Map: | G317-路线图.svg |
| Length Km: | 2028 |
| Terminus A: | Chengdu, Sichuan |
| Terminus B: | Naqu, Tibet |
| Previous Type: | G |
| Previous Route: | 316 |
| Next Type: | G |
| Next Route: | 318 |
| Photo Notes: | G317 by the Zipingpu Reservoir, Dujiangyan, Sichuan |
China National Highway 317 (G317) 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.[1] As of 2017, Highway 317 passes through the highest vehicular tunnel in the world in the Chola Mountains of Dêgê County.[2] Part of the route is concurrent with the Sichuan-Tibet Highway.[3]
| Chengdu, Sichuan | 0 | |
| Pi County, Sichuan | 20 | |
| Dujiangyan City, Sichuan | 54 | |
| Wenchuan County, Sichuan | 149 | |
| Li County, Sichuan | 206 | |
| Barkam County, Sichuan | 394 | |
| Zhaggo County, Sichuan | 661 | |
| Garzê County, Sichuan | 756 | |
| Dêgê County, Sichuan | 960 | |
| Jomda County, Tibet | 1070 | |
| Qamdo County, Tibet | 1298 | |
| Riwoqê County, Tibet | 1403 | |
| Dêngqên County, Tibet | 1546 | |
| Baqên County, Tibet | 1782 | |
| Sog County, Tibet | 1812 | |
| Nagqu County, Tibet | 2043 |