| POS | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|
| 1 | United States Junior |
USA
|
38.98 WJL | 0.155 |
| 2 | Jamaica Junior |
JAM
|
39.25 SB | 0.156 |
| 3 | South Africa Junior |
RSA
|
39.70 | 0.152 |
| 4 | Japan Junior |
JPN
|
39.89 SB | 0.146 |
| 5 | Great Britain & N.I. Junior |
GBR
|
39.89 | 0.149 |
| 6 | Trinidad and Tobago Junior |
TTO
|
40.16 SB | 0.214 |
| 7 | Chinese Taipei Junior |
TPE
|
40.17 | 0.168 |
| 8 | Thailand Junior |
THA
|
40.28 | 0.188 |