[fredley]

There are trains between Moscow / Beijing and Pyongyang, which is interesting I think.

[dustintrex]

There is also a train line between Seoul and Pyongyang, which unsurprisingly is virtually never used.

[dkarp]

I've ridden this trainline from Pyongyang to Beijing, although it was necessary to change trains after crossing the Yalu river and entering China at Dandong