The Karakoram Highway, commonly referred to as KKH and sometimes transliterated as Karakorum, connects Western China and Pakistan, passing through the disputed region of Kashmir. It is one of the few pathways that traverse the Himalayas and is the most westerly among them. Traveling along the KKH is recognized as one of the iconic experiences in global travel, and it is also the highest international road in the world.
Historically, this route served as a caravan pathway, being one section of the ancient Silk Road. In more recent times, the highway has been constructed by the governments of China and Pakistan. The Khunjerab Pass at the border is the highest border crossing worldwide, at an elevation of over 4800 meters (approximately 16,000 feet). For context, Mont Blanc, the highest peak in Western Europe, stands at 4810 m, while Mount Whitney, the tallest point in the contiguous United States, is 4421 m.
This route may represent the ultimate test for passionate cyclists. There are organized bike tours available, along with several publications focusing on cycling this route. Unfortunately, the border remains closed to cyclists; everyone must take a bus from either Tashkurgan (in China) or Sost (in Pakistan). From the Pakistani side, you can ride your bicycle up to the pass, but you cannot cross it. You will need to return to Sost to board the bus.