China Railway K3/4

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K3/4

The destination board of the K3/4 train.
Overview
Service type	Long-haul international rail service
Status	Suspended due to COVID-19 pandemics[1]
Locale	Russia, Mongolia, and China
First service	4 June 1959
Current operator(s)	China Railway
Former operator(s)	Soviet Railways (4 June 1959 – 24 May 1960)[2]
Route
Termini	Beijing, China Moscow, Russia
Stops	33
Distance travelled	7826 km
Average journey time	131 hours 31 minutes (K3), 129 hours 50 minutes (K4)[3]
Service frequency	Weekly
Train number(s)	K3/4 (Within China) 003/004 (Within Mongolia) 003З/004З (Within Russia)
Line(s) used	Trans-Siberian Railway, Trans-Mongolian Railway, Ji'er Railway [zh], and Jingbao Railway
On-board services
Class(es)	Hard sleeper, luxury Soft sleeper
Sleeping arrangements	6 berth sleepers and 2 berth sleepers
Catering facilities	Restaurant car
Technical
Rolling stock	China Railway Type 18 [zh] and 19 [zh]
Track gauge	1520 mm and 1435mm (with break of gauge)

The China Railway K3/4 train was 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.^[3][4]