Ka kammala wannan magana: A Wasannin Olympics na shekara ta 2000 a birnin Sydney, Kim ta yanke shawarar yin gwaji da yin tsere da gudu, ta yi tsere a wasanni biyu na iyo. Ya buga FINA B-misali na 22.99 (50 m freestyle) da 51.14 (100 m freestyle) daga Dong-A Swimming Tournament a Ulsan. A cikin
100 m freestyle, Kim ya sanya na ashirin da huɗu a farkon safiya. Yin iyo a zagaye na shida, ya ɗauki matsayi na biyu ta hanyar 0.21 na biyu a bayan mai nasara Peter Mankoč na Slovenia a cikin mafi kyawun rayuwa na 50.49. Kwana biyu bayan haka, a tseren mita 50 na 'yanci, Kim ya rasa wasan kusa da na karshe da karamin kashi na 0.02 seconds, inda ya gama wasa tare da Jiang Chengji na kasar Sin a rikodin Koriya ta Kudu na 22.82.