| |
| 400 (6 Aug) |
| Pos | Perf | Name | | AG | | Age | DOB | Coach | Club | SB | PB | |
| 1 | 49.66 | Sanya Richards-Ross | | SEN | W | | | | USA | | |  |
| 2 | 49.84 | Rosemarie Whyte | | SEN | W | | | | JAM | | | |
| 3 | 50.46 | Novlene Williams-Mills | | SEN | W | | | | JAM | | | |
| 4 | 50.64 | Shericka Williams | SB | SEN | W | | | | Jamaica | 50.64 | 50.24 | |
| 5 | 51.01 | Lee McConnell | SB | SEN | W | 32 | 09.10.78 | Rodger Harkins | Shaftesbury Barnet | 51.01 | 50.82 | |
| 6 | 51.20 | Jessica Beard | | SEN | W | | | | USA | | | |
| 7 | 51.63 | Shana Cox | | SEN | W | 26 | 22.01.85 | | Woodford Green Essex Ladies | 51.24 | 50.81 | |
| 8 | 51.87 | Christine Ohuruogu | | SEN | W | 27 | 17.05.84 | Lloyd Cowan | Newham & Essex Beagles | 50.85 | 49.61 | |