Tags: Cyclist.
Gu Sun-geun (born 19 August 1984) is a South Korean professional racing cyclist. Having finished third in the road race in the 2007 UCI B Road World Championships and second in the time trial Gu qualified to represent her country at the 2008 Summer Olympics in Beijing. Gu crashed in the road race when she lost control of her bike on the wet roads bringing others down with her.