The Women's Marathon event at the 2000 Summer Olympics took place on 24 September 2000 in the streets of Sydney, Australia.

Naoko Takahashi is a retired Japanese long-distance runner and Olympic gold medal-winning marathoner. She won the gold medal in the marathon at the 2000 Sydney Olympics and became the first woman to complete a marathon in under 2:20:00, which she accomplished in 2001.