Afghanistan–China border

The Afghanistan–China border is a 92-kilometre-long (57 mi) boundary between Afghanistan and China, beginning at the tripoint of both countries with the Pakistan's federally administered territory of Gilgit-Baltistan, following the watershed along the Mustagh Range, and ending at the tripoint with Tajikistan. This short border is in the far northeast of Afghanistan, distant from much of the country or urban areas in either country, at the end of the long, narrow Wakhan Corridor. The Chinese side of the border is in the Chalachigu Valley. The border is crossed by several mountain passes, including Wakhjir Pass in the south and Tegermansu Pass in the north.

Both sides of the border are protected areas: Wakhan National Park in Wakhan District, Badakhshan Province on the Afghan side and Taxkorgan Nature Reserve in Taxkorgan Tajik Autonomous County, Kashgar Prefecture, Xinjiang Uygur Autonomous Region on the Chinese side.

The border marks the greatest terrestrial time zone difference on Earth, with a 3.5 hour difference between Afghanistan's UTC+4:30 and China's UTC+08:00.