European route E30 is an A-Class European route from the port of Cork in Ireland in the west to the Russian city of Omsk, near the border with Kazakhstan in the east. For much of the Russian stretch, it follows the Trans-Siberian Highway and, east of the Ural Mountains, with AH6 of the Asian Highway Network, which continues to Busan, South Korea. The total length is 6,530 km (4,060 mi)—3,300 km (2,100 mi) from Cork to Moscow, and 3,230 km (2,010 mi) from Moscow to Omsk. The naming is by the United Nations Economic Commission for Europe (UNECE).

Omsk is the administrative center and largest city of Omsk Oblast, Russia. It is situated in southwestern Siberia and has a population of over 1.1 million. Omsk is the third largest city in Siberia after Novosibirsk and Krasnoyarsk, and the twelfth-largest city in Russia. It is an important transport node, serving as a train station for the Trans-Siberian Railway and as a staging post for the Irtysh River.