A female athlete participates in the 50m running event at the Special Olympics Chicago 42nd Annual Spring Games in Chicago, the United States, May 5, 2010. The Games took place on May 5-7, 2010. Over 2,700 athletes competed in track and field events, joined by over 900 coaches and chaperones and nearly 500 volunteers each day. [Xinhua/Jiang Xintong]