The Women's 400m event at the 2010 South American Games was held on March 20 at 18:30.
Contents |
| Gold | Silver | Bronze |
| Barbara Oliveira Brazil |
Yenifer Padilla Colombia |
Yanet Largacha Colombia |
| Standing records prior to the 2010 South American Games | ||||
|---|---|---|---|---|
| World record | Marita Koch (GDR) | 47.60 | Canberra, Australia | 6 October 1985 |
| World Leading | Rosemarie Whyte (JAM) | 52.19 | Kingston, Jamaica | 20 February 2010 |
| South American record | Ximena Restrepo (COL) | 49.64 | Barcelona, Spain | 5 August 1992 |
| South American U23 record | Ximena Restrepo (COL) | 50.14 | Havana, Cuba | 5 August 1991 |
| Rank | Athlete | Reaction | Result | Notes |
|---|---|---|---|---|
| Barbara Oliveira (BRA) | 0.211 | 53.38 | ||
| Yenifer Padilla (COL) | 0.181 | 54.09 | ||
| Yanet Largacha (COL) | 0.267 | 54.22 | ||
| 4 | Maria Ayelen Diogo (ARG) | 0.257 | 56.11 | SB |
| 5 | Leslie Fernanda Rivero (BOL) | 56.13 | SB | |
| 6 | Cristiane Silva (BRA) | 0.403 | 56.52 | |
| 7 | Alison Mariana Delfin (BOL) | 0.234 | 56.60 | |
| 8 | Juliana Menendez (ARG) | 0.292 | 58.47 |