| Order / Lane | ATHLETE | COUNTRY | PB | SB 2010 |
|---|---|---|---|---|
| 1 | Australia Junior |
AUS
|
44.86 | 45.41 |
| 2 | Nigeria Junior |
NGR
|
43.44 | 45.19 |
| 3 | United States Junior |
USA
|
43.29 | 43.56 |
| 4 | Great Britain & N.I. Junior |
GBR
|
44.16 | 44.45 |
| 5 | Germany Junior |
GER
|
43.91 | 44.04 |
| 6 | Jamaica Junior |
JAM
|
43.40 | 44.68 |
| 7 | Netherlands Junior |
NED
|
44.70 | 44.70 |
| 8 | Canada Junior |
CAN
|
44.77 | 44.77 |