The women's 400 metres sprint competition of the

athletics Athletics may refer to: Sports * Sport of athletics, a collection of sporting events that involve competitive running, jumping, throwing, and walking ** Track and field, a sub-category of the above sport * Athletics (physical culture), competi ...

events at the

2011 Pan American Games The 2011 Pan American Games, officially the XVI Pan American Games, was an international multi-sport event that was held from October 14–30, 2011, in Guadalajara, Jalisco, Mexico. Some events were held in the nearby cities of Ciudad Guzmán, ...

will take place between the 24 and 26 of October at the

Telmex Athletics Stadium Telmex is a Mexican telecommunications company headquartered in Mexico City that provides telecommunications products and services in Mexico. Telmex is still the dominant fixed-line phone carrier in Mexico. In addition to traditional fixed-line ...

.Guadalajara 2011 sessions
The defending Pan American Games champion is

Ana Guevara Ana Gabriela Guevara Espinoza (born March 4, 1977) is a Mexican former track and field athlete who specialized in the 400 meters and is the 7th fastest female 300-meter runner in the world, running 300 meters in 35.3 seconds on May 3, 2003. She ...

Mexico Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatema ...

, who has since retired.

Records

Prior to this competition, the existing world and Pan American Games records were as follows:

Qualification

Each National Olympic Committee (NOC) was able to enter up to two entrants providing they had met the minimum standard (53.00) in the qualifying period (January 1, 2010 to September 14, 2011).Athletics technical manual

Schedule

Results

All times shown are in seconds.

Semifinals

The semifinals were held on October 25. The top three in each heat (Q) and the next two fastest (q) qualified for the final.

Final

The final was held on October 26.

References

{{DEFAULTSORT:Athletics at the 2011 Pan American Games - Women's 400 metres Athletics at the 2011 Pan American Games 2011 2011 in women's athletics