| 1 | Natalya Antyukh | RUS | 50,88 | Q |
| 2 | Mary Wineberg | USA | 51,25 | Q |
| 3 | Shereefa Lloyd | JAM | 51,42 | Q |
| 4 | Lee McConnell | GBR | 51,44 | Q |
| 5 | Oksana Shcherbak | UKR | 52,39 | |
| 6 | Justine Bayigga | UGA | 53,25 | |
| 7 | Joy Eze | NGR | 53,83 | |
| 8 | Olga Tereshkova | KAZ | 54,09 |
| 1 | DeeDee Trotter | USA | 51,27 | Q |
| 2 | Nicola Sanders | GBR | 51,45 | Q |
| 3 | Joanne Cuddihy | IRL | 51,55 | Q |
| 4 | Christine Amertil | BAH | 51,55 | Q |
| 5 | Zuzanna Radecka | POL | 52,19 | |
| 6 | Folashade Abugan | NGR | 52,58 | |
| 7 | Maria Laura Almirão | BRA | 53,68 | |
| 8 | Hazel-Ann Regis | GRN | 54,78 | |
| 9 | Vera Barbosa | CPV | 58,56 |
| 1 | Tatyana Veshkurova | RUS | 51,67 | Q |
| 2 | Shericka Williams | JAM | 51,72 | Q |
| 3 | Barbara Petráhn | HUN | 51,86 | Q |
| 4 | Amantle Montsho | BOT | 51,87 | Q |
| 5 | Kineke Alexander | VIN | 52,51 | |
| 6 | Ginou Etienne | HAI | 53,89 | |
| 7 | Amy Mbacke Thiam | SEN | 54,31 | |
| 8 | Nawal El Jack | SUD | 55,29 |
| 1 | Novlene Williams | JAM | 50,21 | Q |
| 2 | Ana Guevara | MEX | 50,85 | Q |
| 3 | Ionela Târlea-Manolache | ROM | 51,59 | Q |
| 4 | Aymeé Martínez | CUB | 51,74 | Q |
| 5 | Aliann Pompey | GUY | 51,95 | q |
| 6 | Christy Ekpukhon Ihunaegbo | NGR | 52,05 | q |
| 7 | Makelesi Bulikiobo | FIJ | 52,23 | |
| 8 | Solen Désert | FRA | 54,03 |
| 1 | Christine Ohuruogu | GBR | 50,46 | Q | |
| 2 | Ilona Usovich | BLR | 50,53 | Q | NR |
| 3 | Natasha Hastings | USA | 51,07 | Q | |
| 4 | Indira Terrero | CUB | 51,76 | Q | |
| 5 | Daniela Reina | ITA | 52,02 | q | |
| 6 | Asami Tanno | JPN | 52,13 | q | |
| 7 | Gabriela Medina | MEX | 53,16 | ||
| 8 | Sandrine Thiébaud-Kangni | TOG | 54,11 | ||
| 9 | Temalangeni Dlamini | SWZ | 58,27 |
| 1 | Novlene Williams | JAM | 49,66 | Q | |
| 2 | Ana Guevara | MEX | 50,19 | Q | |
| 3 | Ilona Usovich | BLR | 50,31 | q | NR |
| 4 | Joanne Cuddihy | IRL | 50,73 | NR | |
| 5 | Lee McConnell | GBR | 51,07 | ||
| 6 | Indira Terrero | CUB | 51,08 | ||
| 7 | Natasha Hastings | USA | 51,45 | ||
| 8 | Asami Tanno | JPN | 51,81 |
| 1 | Nicola Sanders | GBR | 49,77 | Q |
| 2 | Natalya Antyukh | RUS | 49,93 | Q |
| 3 | DeeDee Trotter | USA | 50,31 | q |
| 4 | Shericka Williams | JAM | 50,37 | |
| 5 | Christine Amertil | BAH | 51,18 | |
| 6 | Daniela Reina | ITA | 51,99 | |
| 7 | Barbara Petráhn | HUN | 52,12 | |
| 8 | Aliann Pompey | GUY | 53,58 |
| 1 | Christine Ohuruogu | GBR | 50,16 | Q | |
| 2 | Mary Wineberg | USA | 50,27 | Q | |
| 3 | Tatyana Veshkurova | RUS | 50,71 | ||
| 4 | Amantle Montsho | BOT | 50,90 | NR | |
| 5 | Shereefa Lloyd | JAM | 51,00 | ||
| 6 | Christy Ekpukhon Ihunaegbo | NGR | 51,60 | ||
| 7 | Ionela Târlea-Manolache | ROM | 51,62 | ||
| 8 | Aymeé Martínez | CUB | 57,77 |