| Order / Lane | Bib | ATHLETE | COUNTRY | PB | SB 2012 |
|---|---|---|---|---|---|
| 2 | POL | Poland Junior |
POL
|
39.31 | 39.31 |
| 3 | AUS | Australia Junior |
AUS
|
39.34 | 39.34 |
| 4 | JPN | Japan Junior |
JPN
|
39.01 | 39.01 |
| 5 | JAM | Jamaica Junior |
JAM
|
39.05 | 39.19 |
| 6 | USA | United States Junior |
USA
|
38.66 | 39.25 |
| 7 | GBR | Great Britain & N.I. Junior |
GBR
|
39.05 | 39.09 |
| 8 | BAH | Bahamas Junior |
BAH
|
39.48 | 39.48 |
| 9 | BRA | Brazil Junior |
BRA
|
39.29 | 39.29 |