Take the Iconic G318 and Discover Tra La Pass

Tra La is a mountain pass at an elevation of 4,046m (13,274ft) above sea level, located in the Samzhubzê District of Shigatse, Tibet Autonomous Region, China. Coordinates: 29.15114, 88.6215. The pass is a key point along the Friendship Highway, connecting Central Tibet with the Nepal border.

Tra La Pass

Where is the Tra La pass?

The pass is situated on the China National Highway 318 (G318), also known as the Friendship Highway. It runs east-west between Gyamcoxung and Gêding. This section of the G318 is a vital transport corridor in the Samzhubzê District, providing one of the main links toward the western regions of Tibet and the Nepal border at Gyirong or Zhangmu.

Road facts: Tra La
Elevation 4,046m (13,274ft)
Surface Paved (Asphalt)
Max Gradient 5%
Length 60 km (37 miles)
Road Name National Highway 318 (G318)

Is the road to Tra La paved?

Yes. The entire 60 km section is fully paved with asphalt. The road is maintained in good condition due to its strategic importance as a national highway. However, the high altitude means the surface is subject to rapid temperature changes, which can lead to cracks or localized damage. Drivers should watch for heavy truck traffic, as the G318 is a major commercial artery.

How long and steep is the road to Tra La?

The road through the pass extends for 60 km (37 miles). Unlike other Himalayan passes, the Tra La section is relatively flat with an average gradient that rarely exceeds 3-5%. There are no extreme switchbacks or narrow sections, making it accessible for all types of vehicles. The main challenge for drivers is the sustained high altitude and the potential for strong crosswinds.

Is the road to Tra La open year-round?

The pass is typically open all year round. Due to its lower elevation compared to other Tibetan passes (at just over 4,000m), it is less prone to permanent snow closures. However, short-term closures occur during the winter months (December to March) following heavy snowstorms or when black ice makes the pavement hazardous.
Road suggested by: Hugh Wilson
Pic: 程亮