Rail transport is an important means of travel in the landlocked country of Mongolia, which has relatively few paved roads.
For domestic transport, daily trains run from Ulaanbaatar to Darkhan, Sukhbaatar, and Erdenet, as well as Zamyn-Üüd, Choir and Sainshand.
Mongolia uses the 1,520 mm (4 ft 11+27⁄32 in) (Russian gauge) with a total system length of 2,810 kilometres (1,750 mi).
Mongolian railways transported 20.5 million tons of freight in 2013, which is close to the system's full capacity.
In 2016, a line linking Züünbayan to Khangi on the Chinese border (280 km (170 mi)) was approved; it was completed in 2023.