[1] As a teenager, she represented South Korea in two editions of the Olympic Games (1996 and 2000), and also held numerous career bests and national records in both 200 and 400 m freestyle.
[2] She failed to reach the top 16 final in the 200 m breaststroke, finishing only in twenty-eighth place at 2:36.20.
[3] At the 2000 Summer Olympics in Sydney, Roh competed only in a middle-distance freestyle double.
Swimming in heat two, she faded down the stretch to pick up a seventh seed in 4:25.66, more than a dozen body length behind leader Laetitia Choux of France.
[7][8] The following day, in the 200 m freestyle, Roh posted a time of 2:07.21 to round out the field in heat three, but finished only in thirty-third place on the morning prelims.