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.
Contents
Medalists
* Runners who participated in the heats only and received medals.
Records
Prior to the competition, the following records were as follows.
No new world or championship record was set during this competition.
Heats
Qualification: First 3 of each heat (Q) plus the 2 fastest times (q) advance to the final.
Key: DQ = Disqualified, Q = qualification by place in heat, q = qualification by overall place, SB = Seasonal best
Final
Key: SB = Seasonal best, WL = World leading (in a given season)
References
2009 World Championships in Athletics – Women's 4 × 400 metres relay Wikipedia(Text) CC BY-SA