| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 1381 | Tiffany JAMES |
JAM
|
51.32 WU20L | 0.153 |
| 2 | 1655 | Lynna IRBY-JACKSON |
USA
|
51.39 PB | 0.192 |
| 3 | 1376 | Junelle BROMFIELD |
JAM
|
52.05 | 0.324 |
| 4 | 1006 | Jessica Thornton |
AUS
|
52.05 PB | 0.159 |
| 5 | 1424 | Maureen Nyatichi THOMAS |
KEN
|
52.09 NU20R | 0.164 |
| 6 | 1141 | Roxana GÓMEZ |
CUB
|
52.24 PB | 0.227 |
| 7 | 1085 | Natassha MCDONALD |
CAN
|
53.35 | 0.181 |
| 8 | 1622 | Dzhois Koba |
UKR
|
53.74 | 0.224 |