Previously, we reported that a fan leaked information about Super Junior’s Siwon, SHINee’s Minho, and Wonder Girls‘ Sohee appearing on the upcoming episode of ‘Running Man‘. However, it seems that this next episode of ‘Running Man’ will see more than just the appearances of those three idols as it has been revealed that f(x)’s Sulli, and SISTAR’s Hyorin will also be guest-starring on the same episode!

The ‘Running Man’ members met up with the idols at the Gimpo Airport, and couldn’t hold back their happiness at meeting some of Korea’s top idols.

The cast members as well as the guest-stars teamed up for various challenges, including an ‘Arithmetic Race’ which involved solving numbers and math symbols they found, and the ‘1000 Songs Challenge‘ where they had to sing songs at the SBS studio to complete their mission.

Don’t miss this exciting episode of ‘Running Man’ when it airs on January 1st, 2012!

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