| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | ESP | Spain U20 |
ESP
|
45.10 Q NU20R | 0.160 |
| 2 | ECU | Ecuador U20 |
ECU
|
46.20 Q SB | 0.257 |
| JAM | Jamaica U20 |
JAM
|
DQ R163.3(a) | 0.173 | |
| CZE | Czech Republic U20 |
CZE
|
DNF | 0.171 | |
| NED | Netherlands U20 |
NED
|
DNF | 0.150 | |
| TTO | Trinidad and Tobago U20 |
TTO
|
DNS |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | FRA | France U20 |
FRA
|
43.82 Q WU20L | 0.208 |
| 2 | USA | United States U20 |
USA
|
44.31 Q SB | 0.162 |
| 3 | POL | Poland U20 |
POL
|
44.55 q NU20R | 0.154 |
| 4 | CAN | Canada U20 |
CAN
|
45.89 SB | 0.146 |
| 5 | THA | Thailand U20 |
THA
|
45.89 | 0.174 |
| GBR | Great Britain and N. I. U20 |
GBR
|
DNF | 0.150 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | GER | Germany U20 |
GER
|
44.73 Q | 0.151 |
| 2 | IRL | Ireland U20 |
IRL
|
45.09 Q SB | 0.169 |
| 3 | AUS | Australia U20 |
AUS
|
45.18 q SB | 0.124 |
| 4 | ITA | Italy U20 |
ITA
|
45.50 | 0.164 |
| 5 | RSA | South Africa U20 |
RSA
|
45.98 SB | 0.149 |
| NZL | New Zealand U20 |
NZL
|
DQ R163.3(a) | 0.148 |