Running Man (Korean:런닝맨) is a Korean variety show; a part of SBS's Good Sunday lineup, along with Barefooted Friends. It was first aired on July 11, 2010. This show was classified as an "urban action variety" a never-before seen new genre of variety shows focused in an urban environment.The MCs and guests complete missions in a landmark to win the race. The original members of Running Man are Yoo Jae-suk, Ji Suk-jin, Kim Jong-kook, Haha, Lee Kwang-soo, Song Joong-ki, and Gary.Song Ji-hyo was originally a guest for the second (episode 2-3) and third landmark (ep 4-5). She officially joined the program in the fourth landmark (ep 6) but was unable to attend until the fifth landmark (ep 7).Lizzy was also originally a guest for the eleventh (ep 13) and twelfth landmark (ep 14). She officially joined the program in the sixteenth landmark (episode 18).However, she has not been seen since episode 26. In February 2011, it was revealed that she was only a long-term guest and has left the program.