2009 World Championships in Athletics – Women's 4 × 400 metres relay
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Events at the 2009 World Championships 
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|---|---|---|---|---|
| Track events | ||||
| 100 m | men | women | ||
| 200 m | men | women | ||
| 400 m | men | women | ||
| 800 m | men | women | ||
| 1500 m | men | women | ||
| 5000 m | men | women | ||
| 10,000 m | men | women | ||
| 100 m hurdles | women | |||
| 110 m hurdles | men | |||
| 400 m hurdles | men | women | ||
| 3000 m steeplechase |
men | women | ||
| 4×100 m relay | men | women | ||
| 4×400 m relay | men | women | ||
| Road events | ||||
| Marathon | men | women | ||
| 20 km walk | men | women | ||
| 50 km walk | men | |||
| Field events | ||||
| Long jump | men | women | ||
| Triple jump | men | women | ||
| High jump | men | women | ||
| Pole vault | men | women | ||
| Shot put | men | women | ||
| Discus throw | men | women | ||
| Javelin throw | men | women | ||
| Hammer throw | men | women | ||
| Combined events | ||||
| Heptathlon | women | |||
| Decathlon | men | |||
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 = Disqualified, Q = qualification by place in heat, q = qualification by overall place, SB = Seasonal best
Key: SB = Seasonal best, WL = World leading (in a given season)
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