These are the official results of the Women's 400 metres hurdles event at the 2003 IAAF World Championships in Paris, France. There were a total number of 29 participating athletes, with four qualifying heats, two semi-finals and the final held on Thursday 2003-08-28 at 22:00h.

Final RANKFINALTIME53.22 53.6553.714.54.415.54.616.54.797.55.608.55.90

Semi-final Held on Monday 2003-08-25 RANKHEAT 1TIME1.53.772.53.903.54.264.55.005.55.246.55.357.55.488.55.82

RANKHEAT 2TIME1.53.572.54.843.55.184.55.335.55.356.55.767.56.21—DNF

Heats Held on Sunday 2003-08-25 RANKHEAT 1TIME1.54.012.55.283.56.104.56.115.56.516.56.627.58.91

RANKHEAT 2TIME1.55.412.55.803.55.864.56.025.56.056.56.227.1:01.038.1:02.90

RANKHEAT 3TIME1.54.802.55.533.55.794.56.075.56.876.1:03.55—DNF

RANKHEAT 4TIME1.54.482.54.983.55.184.55.755.55.956.57.087.1:01.86

See also Athletics at the 2003 Pan American Games - Women's 400 metres hurdles

References