Trans-Siberian Highway Trans-Siberian Highway The Trans-Siberian Highway is the unofficial name for a network of federal highways that span the width of Russia from the Baltic Sea of the Atlantic Ocean to the Sea of Japan. In the Asian Highway Network, the route is known as AH6. It stretches over from St. Petersburg to Vladivostok. The road disputes the title of the longest national highway in the world with Australia's Highway 1. The highway became fully paved on 12 August 2015. The route, in places coinciding with European route E30 across a distance of about . One of its segment (Chelyabinsk-Novosibirsk) can
West Siberian taiga Siberian taiga ecoregion, which is colder and more rugged in terrain. The southern edge of the region lies north of the belt of temperate forests and forest-steppe that runs along the Trans-Siberian railway. Because the West Siberian ecoregion is thus outside of the normal agricultural and developed strip of southern Russia, it is sparsely populated, although the city of Yekaterinburg is at the extreme southwest corner of the region. The city of Surgut is the largest city in the interior (with just over 300,000 inhabitants). To the north is the tundra of the Yamal-Gydan tundra ecoregion (covering the Ob River