Tayshet is a town and the administrative center of Tayshetsky District in Irkutsk Oblast, Russia, located 669 kilometers (416 mi) northwest of Irkutsk, the administrative center of the oblast. Population: 35,485 (2010 Russian census); 38,535 (2002 Census); 42,391 (1989 Soviet census).

The Trans-Siberian Railway, historically known as the Great Siberian Route and often shortened to Transsib, is a large railway system that connects European Russia to the Russian Far East. Spanning a length of over 9,289 kilometers, it is the longest railway line in the world. It runs from the city of Moscow in the west to the city of Vladivostok in the east.