| Order / Lane | Bib | ATHLETE | COUNTRY | PB | SB 2026 |
|---|---|---|---|---|---|
| 1 | CAN | Canada U20 |
CAN
|
44.42 | 45.03 |
| 2 | ESP | Spain U20 |
ESP
|
44.54 | 44.54 |
| 3 | NGR | Nigeria U20 |
NGR
|
43.44 | 43.65 |
| 4 | JAM | Jamaica U20 |
JAM
|
42.58 | 43.61 |
| 5 | AUS | Australia U20 |
AUS
|
43.44 | 43.44 |
| 6 | GER | Germany U20 |
GER
|
43.27 | 43.92 |
| 7 | SUI | Switzerland U20 |
SUI
|
43.32 | 43.32 |
| 8 | BEL | Belgium U20 |
BEL
|
44.33 | 44.33 |
| 9 | TTO | Trinidad and Tobago U20 |
TTO
|
44.14 | 44.17 |