Kim Hye-song (Korean: ???; Korean pronunciation: [kim.?e.s??] or [kim] [he.s??]; born 9 March 1993) is a North Korean long-distance runner.Marathoner Kim Hye-gyong is her sister.
They are fraternal twins.
Hye-song is the eldest of the two.
According to their coach, Jong Myong-chol, Hye-song is more conservative and quiet than her sister.
The coach considers their healthy rivalry in races and friendship a key to their success.Kim represents the Pyongyang Sports Team.
Together she and her sister train five times a week, running 25–30 km (16–19 mi) a day.The sisters Kim, along with Kim Mi-gyong (no relation) are considered the most prominent of North Korean female marathoners today.