[1] She won a total of two bronze medals, as a member of the South Korean team, in the 4 × 100 m freestyle relay (3:44.81) and 4 × 200 m freestyle relay (8:19.62) at the 2002 Asian Games in Busan, South Korea.

[2][3] Kim qualified for two swimming events at the 2004 Summer Olympics by clearing a FINA B-standard entry time of 2:01.50 (200 m freestyle) from the World Championships in Barcelona, Spain.

[4][5] She also teamed up with Ryu Yoon-ji, Sun So-eun, and Shim Min-ji in the 4 × 100 m freestyle relay.

Swimming the anchor leg, Kim recorded a split of 55.83, but the South Koreans missed the final by two seconds outside the top 8, in a time of 3:44.84.

[6][7] In the 200 m freestyle, Kim challenged seven other swimmers on the fourth heat, including top medal favorite Dana Vollmer of the United States.