| Order / Lane | ATHLETE | COUNTRY | PB | SB 2010 |
|---|---|---|---|---|
| 1 | Thailand Junior |
THA
|
39.66 | 39.82 |
| 2 | Great Britain & N.I. Junior |
GBR
|
39.05 | 39.91 |
| 3 | Jamaica Junior |
JAM
|
39.05 | 39.74 |
| 4 | Trinidad and Tobago Junior |
TTO
|
39.17 | 39.77 |
| 5 | Japan Junior |
JPN
|
39.30 | 39.98 |
| 6 | United States Junior |
USA
|
38.66 | 39.69 |
| 7 | Nigeria Junior |
NGR
|
39.54 | 39.95 |
| 8 | Germany Junior |
GER
|
39.25 | 39.91 |