| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | JAM | Jamaica U20 |
JAM
|
42.59 WU20R | 0.195 |
| 2 | USA | United States U20 |
USA
|
43.28 NU20R | 0.188 |
| 3 | COL | Colombia U20 |
COL
|
44.59 | 0.204 |
| 4 | GER | Germany U20 |
GER
|
44.73 | 0.175 |
| 5 | ITA | Italy U20 |
ITA
|
44.79 | 0.195 |
| 6 | AUS | Australia U20 |
AUS
|
45.15 | 0.165 |
| GBR | Great Britain & NI U20 |
GBR
|
DNF | 0.182 | |
| SUI | Switzerland U20 |
SUI
|
DQ | 0.160 |