| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | USA | United States Junior |
USA
|
38.70 WJL | 0.154 |
| 2 | JPN | Japan Junior |
JPN
|
39.02 SB | 0.157 |
| 3 | JAM | Jamaica Junior |
JAM
|
39.12 SB | 0.174 |
| 4 | CHN | PR of China Junior |
CHN
|
39.51 NJR | 0.168 |
| 5 | NGR | Nigeria Junior |
NGR
|
39.66 SB | 0.170 |
| 6 | TTO | Trinidad and Tobago Junior |
TTO
|
39.92 SB | 0.188 |
| 7 | AUS | Australia Junior |
AUS
|
40.09 SB | 0.126 |
| THA | Thailand Junior |
THA
|
DNF | 0.152 |