Pictured is the first kilometer mark at theGhengis Khan Grassland Extreme Marathon– extreme being the operative word here. Itwas 9 a.m. and the sun was already high inthe sky, temperatures blazing. The runnershad just passed this point when I shot theimage. A long day for those running thefull 42 km. Photographed in Xiwuqi, InnerMongolia, July 4.