| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | RSA | South Africa U20 |
RSA
|
39.50 Q SB | 0.144 |
| 2 | ITA | Italy U20 |
ITA
|
39.63 q SB | 0.143 |
| 3 | BAH | Bahamas U20 |
BAH
|
40.09 SB | 0.169 |
| 4 | BRA | Brazil U20 |
BRA
|
40.24 SB | 0.156 |
| 5 | KSA | Saudi Arabia U20 |
KSA
|
40.86 SB | 0.229 |
| 6 | SKN | Saint Kitts and Nevis U20 |
SKN
|
41.23 SB | 0.221 |
| POL | Poland U20 |
POL
|
DQ | 0.140 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | NGR | Nigeria U20 |
NGR
|
39.41 Q SB | 0.163 |
| 2 | ESP | Spain U20 |
ESP
|
39.79 q | 0.159 |
| 3 | NED | Netherlands U20 |
NED
|
39.85 q NU20R | 0.150 |
| 4 | CAN | Canada U20 |
CAN
|
40.59 SB | 0.168 |
| GBR | Great Britain & NI U20 |
GBR
|
DNF | 0.166 | |
| SUI | Switzerland U20 |
SUI
|
DNF | 0.153 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | JPN | Japan U20 |
JPN
|
39.12 Q SB | 0.158 |
| 2 | JAM | Jamaica U20 |
JAM
|
39.24 q | 0.167 |
| 3 | PER | Peru U20 |
PER
|
40.96 NU20R | 0.210 |
| 4 | THA | Thailand U20 |
THA
|
42.09 SB | 0.153 |
| GER | Germany U20 |
GER
|
DNF | 0.159 | |
| BOT | Botswana U20 |
BOT
|
DQ | 0.180 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | USA | United States U20 |
USA
|
39.78 Q SB | 0.162 |
| 2 | FIN | Finland U20 |
FIN
|
40.04 NU20R | 0.176 |
| 3 | TTO | Trinidad and Tobago U20 |
TTO
|
40.77 SB | 0.146 |
| AUS | Australia U20 |
AUS
|
DNF | 0.147 | |
| FRA | France U20 |
FRA
|
DQ | 0.200 | |
| COL | Colombia U20 |
COL
|
DQ | 0.186 |