How to drive the unpaved road from Qusum to Diyag in Tibet?
The high mountain road connecting Qusum and Diyag is situated in the Tibet Autonomous Region of China. This remote route traverses some of the most isolated terrain in the southern part of the plateau, linking Shannan and Ngari Prefectures.
Where is the road from Qusum to Diyag?
The road stretches across the southern part of Tibet, running from Qusum County (Shannan Prefecture) to Diyag (Zanda County, Ngari Prefecture). The route runs through the rugged landscape of the Transhimalaya, near the border areas of western China.
🇨🇳 Qusum - Diyag Route Data
| Max Elevation | 5,166m (Shiring La) |
| Distance | 147 km (91 miles) |
| Passes crossed | 6 (all over 4,500m) |
| Region | Tibet (Shannan & Ngari) |
Is the road from Qusum to Diyag paved?
The entire 147 km (91 miles) route is totally unpaved. It consists of a gravel and dirt surface that is subject to extreme weather erosion. Due to the loose terrain, deep ruts, and steep gradients, a high-clearance 4x4 vehicle is mandatory. Without stops, the drive typically takes between 7 and 9 hours due to the low average speed required.
Which mountain passes are on the Qusum-Diyag road?
The route is notable for crossing six significant mountain passes, all exceeding 4,500 meters in elevation:
- Shiring La: 5,166m (16,948ft)
- Rangmik La: 5,083m (16,676ft)
- Riupukyong La: 4,694m (15,400ft)
- Kharam La: 4,657m (15,278ft)
- Mandang La: 4,611m (15,127ft)
- Bau La: 4,577m (15,016ft)
What are the driving hazards between Qusum and Diyag?
The road features countless turns and extreme exposure. At elevations consistently above 4,500 meters, oxygen levels are significantly reduced, affecting both engine performance and driver concentration. The area is prone to sudden snowfalls, even in summer, and the unpaved surface can become impassable during the monsoon season or after heavy spring melts.
Road suggested by: Hugh Wilson