That is going to be one crazy episode.

It was officially revealed today that “Running Man” filmed their “100 Guests” episode yesterday, October 19 KST. For the episode, the seven regular cast members of the show had to invite 100 guests in a relay format, with the filming lasting 10 hours.

The numerous guests were comedians Kim Sook, Park Na Rae, Yang Sang Guk, Lee Sang Ho, and Lee Sang Min, actors Kim Kwang Gyu, Kim Min Gyo, and Lim Hyung Joon, TV personality and former basketball player Hyeon Joon Yeob, singers Lee Ha Neul, Park Joon Hyung, 2AM‘s Seulong, Zizo, Freestyle‘s Mino, After School‘s Uee, GFRIEND, SEVENTEEN, N.Flying, and GOT7.

The guests competed with judo athelete Lee Won Hee and other strong athletes.

Fans captured some of the idols groups filming the show and shared the photos throughs social media.

[PIC] RunningMan Idol special w/ SEVENTEEN, GOT7, GFriend & N.Flying airing on Nov 1 at 6:10PM KST (cr. withwoo_17) pic.twitter.com/k9ETJDWuBl — 세븐틴 INDONESIA (@SEVENTEENID) October 19, 2015

GFRIEND RECORDING FOR RUNNING MAN AND I SAW YOO JAE SUK HAHAHAHA HE SO EXCITED �de00 ARRGHHH I CAN'T WAIT!!!! pic.twitter.com/OPbMSLtcYg — Mai G (@maigxii) October 19, 2015

The episode will air November 1.

Watch the latest episode of “Running Man” below.

Link to video: www.viki.com/videos/1061324v-running-man-episode-269