| POS | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|
| 1 | Grit Breuer |
GER
|
51.13 Q | 0.159 |
| 2 | Natalya Nazarova |
RUS
|
51.51 Q | 0.178 |
| 3 | Ester Goossens |
NED
|
52.05 q SB | 0.142 |
| 4 | Virna De Angeli |
ITA
|
52.50 q SB | 0.171 |
| 5 | Alina Râpanu |
ROU
|
52.64 q PB | 0.179 |
| POS | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|
| 1 | Jearl Miles Clark |
USA
|
51.79 Q SB | 0.158 |
| 2 | Deon Hemmings |
JAM
|
52.10 Q | 0.176 |
| 3 | Charity Opara |
NGR
|
52.11 q SB | 0.152 |
| 4 | Sakie Nobuoka |
JPN
|
54.11 | 0.156 |
| 5 | Kaltouma Nadjina |
CHA
|
54.30 NR | 0.182 |
| Helena Fuchsová |
CZE
|
DNS |
| POS | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|
| 1 | Sandie Richards |
JAM
|
52.40 Q | 0.172 |
| 2 | Falilat Ogunkoya |
NGR
|
52.64 Q | 0.137 |
| 3 | Susan Andrews |
AUS
|
52.65 | 0.144 |
| 4 | Shanelle Porter |
USA
|
52.65 | 0.198 |
| Amy Mbacke Thiam |
SEN
|
DNS |
| POS | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|
| 1 | Olga Kotlyarova |
RUS
|
52.06 Q | 0.148 |
| 2 | Ana Guevara |
MEX
|
52.43 Q | 0.177 |
| 3 | Sinead Dudgeon |
GBR
|
52.84 PB | 0.170 |
| 4 | Tonique Williams-Darling |
BAH
|
54.65 | 0.140 |
| 5 | Yuxiang Chen |
CHN
|
55.14 | 0.197 |
| Ameerah Bello |
ISV
|
DNS |