[1] She represented South Korea in two editions of the Olympic Games (1996 and 2000), and eventually became a top 20 finalist at the 2003 Summer Universiade in Daegu.

[5] At the 2000 Summer Olympics in Sydney, Byun competed only in the 100 m breaststroke.

She achieved a FINA B-cut of 1:11.11 from the Dong-A Swimming Tournament in Ulsan.

[6] She challenged seven other swimmers in heat four, including top favorites Sarah Poewe of South Africa and Masami Tanaka of Japan.

She rounded out the field to last place in 1:11.64, more than half a second (0.50) below her entry standard and 3.58 behind leader Poewe.