Career
Sung competed at the 2014 Winter Olympics for South of Korea. In the Women"s singles she placed 29th. She was also a part of the South Korean relay team, which finished 12th.
As of September 2014, Sung"s best performance at the FIL World Luge Championships is 29th, in the 2013 Championships.
As of September 2014, Sung"s best Luge World Cup overall finish is 35th in 2011-2012.