400m GIRLS FINAL ; Official result since 17:58
| Rank | Lane | ID | Name | SB | Team | Cat | Result | Info | Video |
| 1 | 5 | 167 | CARTI Iyndra-Sareena | 54"53 | FRA | Youth | 54.31 | ||
| 2 | 6 | 484 | KOBA Dzhois | 55"80 | UKR | Youth | 54.99 | ||
| 3 | 8 | 99 | KIRKEGAARD Anne Sofie Fruerskov | 55"65 | DEN | Youth | 55.39 | ||
| 4 | 3 | 383 | ALEKSEEVA Ekaterina | 54"99 | RUS | Youth | 55.47 | ||
| 5 | 4 | 83 | KOUNTOURI Kalliopi | 56"24 | CYP | Youth | 55.69 | ||
| 6 | 7 | 321 | ROSSEN Kim | 56"61 | NED | Youth | 55.87 | ||
| 7 | 1 | 274 | KOBLENCE Aleksandra | 56"29 | LAT | Youth | 56.43 | ||
| 8 | 2 | 221 | BROMELL Jenna | 56"29 | IRL | Youth | 57.36 |