Trans-Siberian Railway

The Trans-Siberian Railway is one of the longest and most legendary railway routes in the world. Stretching from Moscow to Vladivostok, it spans over 9,200 kilometers, crosses seven time zones, and takes about six to seven days to complete the full journey without extended stopovers.

There are three major routes commonly associated with the Trans-Siberian network:

• Trans-Siberian Main Line: Moscow to Vladivostok (Russia)

• Trans-Manchurian Railway: Moscow to Beijing via Harbin (Russia–China)

• Trans-Mongolian Railway: Moscow to Beijing via Ulaanbaatar (Russia–Mongolia–China)

Another key route is the Baikal-Amur Mainline (BAM), which runs north of Lake Baikal and offers an alternative and less-traveled route through remote Siberia.

The railway passes through over 90 cities and crosses 16 major rivers, including the Volga, Ob, Yenisei, and Amur—making it not just a transit route, but a journey through the cultural, historical, and geographic heart of Eurasia.

The Trans-Mongolian Railway

The Trans-Mongolian Railway is a vital and scenic branch of the Trans-Siberian route. Completed in the 1950s, it connects Ulan-Ude (Russia) with Beijing (China) via Ulaanbaatar (Mongolia), spanning around 7,622 kilometers from Moscow to Beijing, with 1,100 kilometers running through Mongolian territory.

Key features:
– 78 stations across Mongolia
– Runs through the Siberian taiga, Mongolian steppes, and the Gobi Desert
– Journey duration: Approximately 6 days

This route offers a stunning visual transition—from the urban sprawl of Beijing, through the arid Gobi Desert and grassy Mongolian steppes, to the forests and mountains of Siberia.

Railway Efficiency and Importance

At the Transit Mongolia 2017 forum, officials highlighted that railways through Mongolia offer a shorter and more time-efficient alternative to routes passing through Kazakhstan or Manchuria. However, infrastructure and scheduling bottlenecks have caused congestion on both the northern and southern borders of Mongolia.
Despite this, the Trans-Mongolian route remains a strategic transit corridor between China, Russia, and Europe.

Passenger and Freight Traffic

• Mongolia’s rail network transports around 3.5 million passengers annually

• Over 22 million tons of cargo are moved each year, primarily between Russia and China

• The network is managed by Ulaanbaatar Railway JSC, a joint venture between the governments of Mongolia and Russia

Border Delays and Rail Gauge Differences

One logistical challenge is the rail gauge difference between countries:
– Russia and Mongolia use the 1,520 mm broad gauge
– China uses the 1,435 mm standard gauge

At border crossings (notably Erenhot/Zamyn-Uud), each train carriage must have its bogies (wheelsets) replaced, which adds several hours to the journey. Some trains also require passport checks and customs inspections, further extending wait times.

Travel Tips

• Best time to travel: Late spring to early autumn (May–September) for mild weather and scenic views

• Popular stopovers: Ulaanbaatar, Lake Baikal (Irkutsk), Terelj National Park, and the Gobi Desert

• Booking: Tickets can be booked through official railway sites, travel agencies, or international booking platforms

Conclusion

Whether you’re a train enthusiast, a cultural explorer, or a slow-travel adventurer, the Trans-Siberian and Trans-Mongolian Railways offer one of the world’s most iconic and immersive overland journeys. Combining landscapes, history, and border-crossing excitement, these routes are more than just transport—they’re a once-in-a-lifetime experience.