Kim Hye Sun graduated from the Seoul Jockeys Academy in 2009. Apprenticed to former top female rider and now trainer Lee Shin Young, Kim Hye Sun become the first lady rider in Korea to ride 100 thoroughbred winners. Kim has ridden internationally in Macau in December 2012 and participated in the Sheikha Fatima bint Mubarak Ladies World Championship challenge in Abu Dhabi in 2015.