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The women's 400 meter freestyle is divided up into long and short competitions. The holder of the long course record is Ethelda Bleibtrey, and the holder of the short course record is Astrid Strauss
Woman's 800 meters freestyle world record holder (long course) July 27, 1987-August 19, 1987,Woman's 800 meters freestyle world record holder (long course) March 22, 1988-August 16, 2008,Woman's 1500 meters freestyle world record holder (long course) July 31, 1987 - June 17, 2007,Woman's 400 meters freestyle world record holder (long course) December 20, 1987-May 12, 2006
Usain Bolt from Jamaica is the world record holder and the Olympic Champion
The womens 800 meter world record is 8:16.22 by Janet Evans (USA) Aug 20, 1989.
Florence Griffith Joyner
That was swimmer Michael Phelps of the United States who set a world record, or was part of a relay team that set a world record, in 7 of the 8 events he won. Those events that Phelps won gold and set world records in were the 400 meter individual medlay, 4x100 freestyle relay, 200 meter freestyle, 200 meter butterfly, 4x200 meter freestyle relay, 200 meter individual medlay, and the 4x100 meter medlay relay. The only event that he did not set a world record in was the 100 meter butterfly and he did set an Olympic record in winning gold in that event.
Rebecca Adlington's time of 8:14.10 in the finals of the women's 800 meter freestyle was an Olympic record and a world record.
Michael Phelps holds both records for the 200 meter men's freestyle. His record was 1:42.96 at the summer Olympics in 2008 in Beijing.
The current world record for women is held by Kate Zeigler of the United States with a time of 15:42.54.
As of 14 Aug 2008, the world record for women's Olympic 4x200 meter freestyle relay is 7:44.31 held by Team Australia. The previous record was held by USA in 2007 of about 7:49