Muhan Dojeon ( Korean : 무한도전, Hanja : 無限挑戰, Abbr. : Mudo) is a Korean television entertainment program , distributed and syndicated by MBC . As of August, 2007, it had the largest market share for its timeslot, between 21.7 percent and 30.4 percent of Korean television viewers watched Muhan Dojeon at 6:40 PM every Saturday night.
This makes it the top free-to-air television program on Saturday evening, and also the most viewed non- drama program in South Korea every week (excluding special sporting events, since November 2006, with the exception of January 2009). It has kept the same scheduled time, since first airing in 2005. It lasts for 70 minutes, including ten minutes of advertising.
Episodes are also frequently rerun on several Korean cable broadcasting channels.