Mary Lines was a British athlete. She competed in the long jump and 60 m – 800 m running events at the 1921 Women's Olympiad, 1922 Women's Olympiad and the 1922 Women's World Games and won nine gold, two silver and one bronze medals. In 1924 she participated at the 1924 Women's Olympiad and won the gold medal in the 100 yards running and the long jump. In 1922 she participated at the Women's Olympiad in Paris and won the gold medal in the 4×110 yds relay setting a new world record. Mary Lines (Great Britain) set the women's 100 m world record of 12.8 in Paris, France on August 20, 1922. It stood 9 months, until Marie Mejzlíková's 12.8 on May 13, 1923 (equalling it). Wiki link