The women's 4 x 400 metres relay at the 2009 World Championships in Athletics was held at the Olympic Stadium on August 22 and August 23.
* Runners who participated in the heats only and received medals.
Prior to the competition, the following records were as follows.
No new world or championship record was set during this competition.
Qualification: First 3 of each heat (Q) plus the 2 fastest times (q) advance to the final.
Key: DQ = Disqualifie...
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Start date:
- 2009