| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | CHN | PR of China Junior |
CHN
|
39.75 Q SB | 0.155 |
| 2 | THA | Thailand Junior |
THA
|
40.24 Q | 0.131 |
| 3 | BOT | Botswana Junior |
BOT
|
40.53 SB | 0.173 |
| 4 | POL | Poland Junior |
POL
|
40.68 | 0.184 |
| 5 | TUR | Turkey Junior |
TUR
|
41.18 SB | 0.188 |
| GBR | Great Britain & N.I. Junior |
GBR
|
DNF | 0.146 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | JPN | Japan Junior |
JPN
|
39.23 Q WJL | 0.167 |
| 2 | USA | United States Junior |
USA
|
39.43 Q SB | 0.147 |
| 3 | NGR | Nigeria Junior |
NGR
|
39.67 q SB | 0.174 |
| 4 | AUS | Australia Junior |
AUS
|
40.18 q SB | 0.159 |
| 5 | BAR | Barbados Junior |
BAR
|
41.39 SB | 0.209 |
| CAN | Canada U20 |
CAN
|
DQ R170.7 | 0.143 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | JAM | Jamaica Junior |
JAM
|
39.86 Q | 0.175 |
| 2 | TTO | Trinidad and Tobago Junior |
TTO
|
40.32 Q | 0.190 |
| 3 | BAH | Bahamas Junior |
BAH
|
40.45 | 0.187 |
| 4 | NOR | Norway Junior |
NOR
|
40.62 NJR | 0.153 |
| 5 | RSA | South Africa Junior |
RSA
|
40.64 SB | 0.179 |
| ITA | Italy Junior |
ITA
|
DQ R170.7 | 0.162 | |
| ZIM | Zimbabwe Junior |
ZIM
|
DNS | 0.000 |