China Railway K3/4

K3/4
The destination board of the K3/4 train.
Overview
Service typeLong-haul international rail service
StatusSuspended
LocaleNorth and East Asia
First serviceJune 4, 1959 (1959-06-04)
Current operatorChina Railway
Former operatorSoviet Railways (4 June 1959 – 24 May 1960)
Route
TerminiBeijing, China
Moscow, Russia
Stops33
Distance travelled7,826 km (4,863 mi)
Average journey time131 hours 31 minutes (K3), 129 hours 50 minutes (K4)
Service frequencyWeekly
Train numbersK3/4 (Within China)
003/004 (Within Mongolia)
003З/004З (Within Russia)
Lines usedTrans-Siberian Railway, Trans-Mongolian Railway, Ji'er Railway, and Jingbao Railway
On-board services
ClassesHard sleeper, luxury Soft sleeper
Sleeping arrangements6 berth sleepers and 2 berth sleepers
Catering facilitiesRestaurant car
Technical
Rolling stock25G
Track gauge1520 mm and 1435mm (with break of gauge)
Track owners

The China Railway K3/4 train is a weekly international K-series train from Beijing to Moscow via Ulaanbaatar mainly using the Trans-Siberian and Trans-Mongolian railways.

The train started running in 1959, covering a distance of 7826 km, and is the 4th longest passenger train service in the world. The Beijing to Moscow train (K3/003/003З) departs every Wednesday from Beijing station and takes 131 hours and 31 minutes to arrive at Moscow Yaroslavsky station, while the Moscow to Beijing train (K4/004/004З) departs every Tuesday from Moscow and takes 129 hours and 50 minutes to arrive at Beijing.

The train was suspended as a result of the COVID-19 pandemic. The suspension was further extended due to the war in Ukraine.