| Order / Lane | Bib | ATHLETE | COUNTRY | PB | SB 2015 | 
|---|---|---|---|---|---|
| 2 | 896 | Shamier LITTLE |  USA | 53.74 | 53.74 | 
| 3 | 387 | Eilidh Doyle |  GBR | 54.22 | 54.46 | 
| 4 | 310 | Sara Slott PETERSEN |  DEN | 53.99 | 53.99 | 
| 5 | 303 | Zuzana HEJNOVÁ |  CZE | 52.83 | 53.76 | 
| 6 | 922 | Cassandra TATE |  USA | 54.01 | 54.01 | 
| 7 | 525 | Kaliese Spencer |  JAM | 52.79 | 54.15 | 
| 8 | 707 | Wenda NEL |  RSA | 54.37 | 54.37 | 
| 9 | 523 | Janieve RUSSELL |  JAM | 54.75 | 54.78 |