High Quality Content by WIKIPEDIA articles! Jill Kintner (born October 24, 1981, from Burien, Washington,USA) is a professional American "Mid School" Bicycle Motocross (BMX) and professional mountain cross (four-cross or 4X) racer whose prime competitive years were 1995-2002 in BMX; 2004–present in mountain cross. She switched to the mountain cross discipline full-time after her BMX retirement early in the 2004 season (many sources have her retiring after the 2002 season, but this is incorrect).