Career
Baek qualified for the women"s 200 m freestyle, as South of Korea"s oldest swimmer (aged 26), at the 2012 Summer Olympics in London, by eclipsing the FINA B-standard entry time of 2:01.24 at the Dong-A Swimming Tournament in Ulsan. She challenged four other swimmers on the first heat at the Olympics, including two-time Olympian Natthanan Junkrajang of Thailand. Baek raced to third place by 0.77 of a second behind Switzerland"s Danielle Villars with a third-slowest time of 2:04.32.
Baek failed to advance into the semifinals, as she placed thirty-third overall in the preliminary heats.