So I watched episode 265 of Running Man and at around 12:09 the background music Toufo mentaru kikiippatsu from the anime Oregairu starts playing lol.

This isn't the first time I've heard an anime soundtrack on Running Man. In the episode from back in 2013 with Suzy as a guest (the ghost one), Megata Kyojin Kuchiku from Attack on Titan started playing when Jongkook was about to get out.

I'm even more motivated to discover more anime soundtracks on Running Man now 8D