I think the font is customized/made by SM Ent, but here's something close.
i know it's late but just here to inform you the closest font and yeah it's true that the logo's just customized.
U and N in Run used lowercase and made thinner
Suggested font: Huni Bitstarrb
Y1el said 
Huni Bitstarrb
This is a clone of Arrus Black, which has already been suggested.
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