[1] He represented his nation South Korea at the 2008 Summer Olympics, and has won two bronze medals, as a member of the men's 400 and 800 m freestyle relay teams at the 2006 Asian Games in Doha, Qatar.

[2][3] Lim competed for the South Korean swimming team in the men's 100 m freestyle at the 2008 Summer Olympics in Beijing.

[4][5] Leading up to the Games, he finished outside the top-eight final time in 50.82 to set a new national mark and register under the FINA B-cut (50.95) by 0.13 of a second at the 2007 Summer Universiade in Bangkok, Thailand.

[6] Coming from sixth at the halfway turn in heat three, Lim edged out the Uzbek swimmer Petr Romashkin by just 0.03 of a second on the final stretch to hit the wall with a fifth-place time in 51.80, almost a second off his entry mark.

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