The 2nd annual Tour de Korea (대한민국 자전거 축전) has been riding through the country since October 22nd, and will be coming to a close on Saturday, October 30th in Suncheon. The final leg starts at Suncheon Jeil College (순천제일대학) at 1:00 pm and ends 27.2 kilometers later at Palma Stadium (팔마경기장).
Course information, and that picture, from the official site.
Meanwhile, the 2010 Green Gwangju and Jeonnam Bike Festival (2010 Green 광주&전남 자전거 축제 대회) will take place on October 31st. It's a 46-km road race held around Gwangju, from Honam University counter-clockwise to City Hall.