Women's 400m: Sydney McLaughlin-Levrone ran one of the fastest times in history to qualify for the women's 400m final and the American is targeting a 40-year record. The American ran 48.29sec in her semi-final on Tuesday smashing her personal best by nearly half a second and then promising to run faster in the final on Thursday. This race definitely gives me confidence for the final, she said. I didn't expect to run this fast today. And I still have more to show.