400 Metres – W FINAL
29 August 2011 – 21:05
| Position | Lane | Bib | Athlete | Country | Mark | React | |
|---|---|---|---|---|---|---|---|
| 1 | 4 | 163 | Amantle Montsho |  BOT |
49.56 | (NR) | 0.327 |
| 2 | 3 | 935 | Allyson Felix |  USA |
49.59 | (PB) | 0.163 |
| 3 | 6 | 760 | Anastasiya Kapachinskaya |  RUS |
50.24 | 0.261 | |
| 4 | 5 | 959 | Francena McCorory | USA |
50.45 | 0.340 | |
| 5 | 2 | 768 | Antonina Krivoshapka | RUS |
50.66 | 0.211 | |
| 6 | 7 | 531 | Shericka Williams |  JAM |
50.79 | 0.352 | |
| 7 | 1 | 972 | Sanya Richards-Ross | USA |
51.32 | 0.160 | |
| 8 | 8 | 532 | Novlene Williams-Mills | JAM |
52.89 | 0.304 |
