| Order / Lane | ATHLETE | COUNTRY | PB | SB 2018 |
|---|---|---|---|---|
| 1 | Poland U20 |
POL
|
43.79 | 45.11 |
| 2 | Australia U20 |
AUS
|
44.86 | 45.26 |
| 3 | Great Britain & NI U20 |
GBR
|
43.81 | 44.57 |
| 4 | Italy U20 |
ITA
|
44.52 | 44.52 |
| 5 | Ireland U20 |
IRL
|
44.15 | 44.15 |
| 6 | Germany U20 |
GER
|
43.27 | 43.80 |
| 7 | Switzerland U20 |
SUI
|
44.61 | 45.01 |
| 8 | France U20 |
FRA
|
43.68 | 44.80 |