The Budrang La pass is a high mountain pass at an elevation of 4.912m (16,115ft) above the sea level, located in the Tibet Autonomous Region of China.
The road to the summit is gravel. It’s called 306 Provincial Road. There is little room for error on this road. Don’t stuff your belly too much. Eventually, you might feel vomiting temptations while climbing circuitous roads at higher altitudes. It still counts as one of the most difficult rides in the country because it's not only unpaved, but because its 80 hairpin turns (50 up and 30 down) are littered with big rocks and loose gravel.
The climb is simply terrible, with a notorius lack of oxygen that tests the organisms and a high degree of steepness. Most people feel altitude sickness at around 2,500-2,800 meters. Near the pass, oxygen is in short supply. At the summit there are several prayer flags that adorn the top of every pass in Tibet.
Road suggested by: Hugh Wilson