What was the fastest Cathy freeman ran in the 400 meter sprinst?

Cathy Freeman's personal best in the 400 meters is 48.63 seconds, achieved on May 21, 1999, at a meet in Berlin. This time remains one of the fastest in women's sprinting history and contributed to her reputation as one of the greatest sprinters of all time. Freeman won gold in the 400 meters at the 2000 Sydney Olympics, solidifying her legacy in the sport.