MBC has finally unveiled its preview for the 'Idol Star Athletics & Swimming Championships"! In this preview, the announcers state that 140 idol members came together to compete. Various clips of idols running, leaping over hurdles, and tackling the high jump are shown. Part 1 of the episode will air on the 5th, and Part 2 will air on the 6th. Check out the video below! [Thanks to everyone who sent this clip]