Rail transport in Mongolia is an important means of travel in the landlocked nation with few paved roads. According to official statistics, rail transport carried 93% of Mongolian freight and 43% of passenger turnover in 2007. The Mongolian rail system employs 12,500 people. The national operator is UBTZ (Ulaanbataar Railway, Mongolian: Улаанбаатар төмөр зам), traditionally also known as Mongolian Railway (MTZ, Mongolian: Монголын төмөр зам). This can be a source of confusion, since MTZ is a distinct company established in 2008. The Mongolian Railway College is located in Ulaanbaatar.
The Trans-Mongolian Railway connects the Trans-Siberian Railway from Ulan Ude in Russia to Erenhot and Beijing in China through the capital Ulan Bator. The Mongolian section of this line runs for 1,110 kilometres (690 mi). The Trans-Mongolian Railway runs through Mongolia on 1,520 mm (4 ft 11 27⁄32 in) Russian gauge track, changing to standard gauge track after entering China. There are several spur lines: to the copper combine in Erdenet, to coal mines in Sharyngol, Nalaikh and Baganuur, to the flourspar mine in Bor-Öndör and to the former Soviet military base in Züünbayan.