Lee Seung Ki and Lee Kwang Soo couple team won the number race, contrary to the audiences' and other members' expectations. On the episode of SBS entertainment program "I Like Sundays - Running Man," which aired on December 1, 2013, Lee Seung Ki, Han Hye Jin, and Bo Ra made appearances. This day's "Running Man" episode started with the concept of numbers 1, 4, 3, 5, and 7. Lee Kwang Soo and Lee Seung Ki showed off their teamwork. Lee Kwang Soo on the final round correctly answered the numbers, 1, 4, 3, 5, and 8, by solving the order of sequence of the numbers.

In this race, which was comprised of five teams of two members, Lee Kwang Soo and Lee Seung Ki, Kim Jong Gook and Bo Ra, Gae Ri and Song Ji Hyo, Ha Ha and Ji Suk Jin, and You Jae Suk and Han Hye Jin teamed up and carried out missions.

Lee Seung Ki, who appeared in "Running Man" after a year of break, caught up with the "Running Man" members, and was not afraid to approach the people walking on the street to get hints on the number race. Han Hye Jin, who had made her first appearance in an entertainment program at "Running Man" after her marriage with the star soccer player Ki Seung Ryong, revealed a behind story that she had been dating Ki Seung Ryong when she filmed the Vietnam episode of "Running Man" back in March of this year.