 Born in Seoul, Ra competed for Korea in badminton at the 2004 Summer Olympics in women's doubles with partner Lee Kyung-won.They had a bye in the first round and defeated Pernille Harder and Mette Schjoldager of Denmark in the second.In the quarterfinals, Ra and Lee beat Lotte Bruil and Mia Audina of the Netherlands 15-5, 15-2.