Mary Teresa Slaney (née Decker, born August 4, 1958) is an American former track athlete. During her career, she won gold medals in the 1500 meters and 3000 meters at the 1983 World Championships, and set 17 official and unofficial world records and 36 US national records. She has held the American record in the 1500 meters, mile, 2000 meters and 3000 meters since the early 1980s.
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Mary Teresa Slaney (née Decker, born August 4, 1958) is an American former track athlete. During her career, she won gold medals in the 1500 meters and 3000 meters at the 1983 World Championships, and set 17 official and unofficial world records and 36 US national records. She has held the American record in the 1500 meters, mile, 2000 meters and 3000 meters since the early 1980s.