| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | USA | United States U20 |
USA
|
38.93 WU20L | 0.150 |
| 2 | JPN | Japan U20 |
JPN
|
39.01 AU20R | 0.138 |
| 3 | GER | Germany U20 |
GER
|
39.13 NU20R | 0.155 |
| 4 | JAM | Jamaica U20 |
JAM
|
39.13 SB | 0.137 |
| 5 | AUS | Australia U20 |
AUS
|
39.57 SB | 0.124 |
| 6 | GBR | Great Britain and N.I. U20 |
GBR
|
39.57 SB | 0.132 |
| 7 | ITA | Italy U20 |
ITA
|
40.02 SB | 0.181 |
| 8 | POL | Poland U20 |
POL
|
40.25 | 0.151 |