Athletics at the 2010 South American Games – Women's 400 metres

Athletics at the 2010 South American Games
Track events
100 m	men	women
200 m	men	women
400 m	men
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
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 400m event at the 2010 South American Games was held on March 20 at 18:30.

Gold	Silver	Bronze
Bárbara de Oliveira  Brazil	Yenifer Padilla  Colombia	Yaneth Largacha  Colombia

Standing records prior to the 2010 South American Games
World record	Marita Koch	East Germany	47.60	Canberra, Australia	6 October 1985
World Leading	Rosemarie Whyte	Jamaica	52.19	Kingston, Jamaica	20 February 2010
South American record	Ximena Restrepo	Colombia	49.64	Barcelona, Spain	5 August 1992
South American U23 record	Ximena Restrepo	Colombia	50.14	Havana, Cuba	5 August 1991

Results were published.^[1][2][3]

Rank	Athlete	Nationality	Reaction	Result	Notes
	Bárbara de Oliveira	Brazil	0.211	53.38
	Yenifer Padilla	Colombia	0.181	54.09
	Yaneth Largacha	Colombia	0.267	54.22
4	María Ayelén Diogo	Argentina	0.257	56.11	SB
5	Leslie Arnez	Bolivia		56.13	SB
6	Cristiane dos Santos Silva	Brazil	0.403	56.52
7	Juliana Menéndez	Argentina	0.292	58.47
–	Alison Sánchez	Bolivia	0.234	DSQ	†

^†: Alison Sánchez from  Bolivia was initially 7th in 56.60, but was disqualified, because she was tested positive for nandrolone.^[4]

• 2010 South American Under-23 Championships in Athletics

• Heat 1