China–Russia border

The Chinese–Russian border or the Sino-Russian border is the international border between China and Russia. After the final demarcation carried out in the early 2000s, it measures 4,209.3 kilometres (2,615.5 mi), and is the world's fifth-longest international border. According to the Russian border agency, as of October 1, 2013, there are more than 160 land border crossings between Russia and China, all of which are open 24 hours. There are crossing points established by the treaty including railway crossings, highway crossings, river crossing, and mostly ferry crossings.