| POS | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|
| 1 | United States Junior |
USA
|
43.49 | 0.166 |
| 2 | France Junior |
FRA
|
44.20 | 0.172 |
| 3 | Jamaica Junior |
JAM
|
44.22 SB | 0.182 |
| 4 | Brazil Junior |
BRA
|
44.45 | 0.190 |
| 5 | Poland Junior |
POL
|
44.70 SB | 0.166 |
| 6 | Great Britain & N.I. Junior |
GBR
|
44.74 | 0.147 |
| 7 | Russia Junior |
RUS
|
44.98 | 0.213 |
| 8 | PR of China Junior |
CHN
|
45.07 | 0.177 |