Boi La is a high mountain pass at an elevation of 4.950m (16,240ft) above the sea level, located in Cona County, in south-eastern Tibet Autonomous Region, People's Republic of China. This route is not recommended if your passengers are prone to car sickness. The climb is terrible, with 62 sharp hairpin turns.
The road to the summit is unpaved. 4x4 vehicle required. Located in the Himalaya mountain range, the road is totally impassable in winters. On this road you're firmly on altitudes over 4,000m. For an unacclimatized person this can be fatal. For your safety, be sure to check the weather forecast before you begin your trip. The extremely high altitude of Tibet makes the winter seasons extremely harsh, marked by extreme cold with gust of strong winds, blowing almost all the time.
The climb is very steep. Starting from Shemucun town, at 3.549m above the sea level, the ascent is 15.97 km (9.92 mi) long, via 62 sharp hairpin turns. The elevation gain is 1.401 meters. The average gradient is 8.77%.
Road suggested by: Hugh Wilson