| Order / Lane | Bib | ATHLETE | COUNTRY | PB | SB 2014 |
|---|---|---|---|---|---|
| 1 | NGR | Nigeria Junior |
NGR
|
39.42 | 39.67 |
| 2 | AUS | Australia Junior |
AUS
|
39.34 | 40.18 |
| 3 | CHN | PR of China Junior |
CHN
|
39.73 | 39.75 |
| 4 | JPN | Japan Junior |
JPN
|
39.01 | 39.23 |
| 5 | USA | United States Junior |
USA
|
38.66 | 39.43 |
| 6 | JAM | Jamaica Junior |
JAM
|
38.97 | 39.35 |
| 7 | TTO | Trinidad and Tobago Junior |
TTO
|
39.17 | 40.06 |
| 8 | THA | Thailand Junior |
THA
|
39.66 | 39.74 |