| POS | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|
| 1 | United States Junior |
USA
|
44.00 Q WJL | 0.146 |
| 2 | Poland Junior |
POL
|
44.78 Q PB | 0.183 |
| 3 | Italy Junior |
ITA
|
44.82 q NJR | 0.139 |
| 4 | South Africa Junior |
RSA
|
45.30 PB | 0.149 |
| 5 | Japan Junior |
JPN
|
45.80 NJR | 0.145 |
| Ireland Junior |
IRL
|
DQ | 0.160 |
| POS | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|
| 1 | Trinidad and Tobago Junior |
TTO
|
44.29 Q NJR | 0.172 |
| 2 | Australia Junior |
AUS
|
44.86 Q AJR | 0.174 |
| 3 | Switzerland Junior |
SUI
|
45.77 SB | 0.139 |
| 4 | Norway Junior |
NOR
|
46.54 PB | 0.139 |
| Mexico Junior |
MEX
|
DQ | 0.149 | |
| Ukraine Junior |
UKR
|
DQ | 0.173 |
| POS | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|
| 1 | France Junior |
FRA
|
43.85 Q WJL | 0.172 |
| 2 | Germany Junior |
GER
|
44.58 Q SB | 0.157 |
| 3 | Jamaica Junior |
JAM
|
45.14 q SB | 0.168 |
| 4 | Canada Junior |
CAN
|
45.23 PB | 0.141 |
| 5 | Finland Junior |
FIN
|
45.31 SB | 0.183 |
| Sweden Junior |
SWE
|
DNF | 0.158 |