The women's 400 metres event at the 2017 European Athletics U23 Championships was held in Bydgoszcz, Poland, at Zdzisław Krzyszkowiak Stadium on 14 and 15 July.
Medalists[edit]
| Gold | Gunta Latiševa-Čudare Latvia
|
| Silver | Laura Müller Germany
|
| Bronze | Laura de Witte Netherlands
|
Results[edit]
Heats[edit]
14 July[1]
Qualification rule: First 2 (Q) and the next 2 fastest (q) qualified for the final.
| Rank | Heat | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 1 | 1 | Gunta Latiševa-Čudare | Latvia |
51.80 | Q, EL |
| 2 | 2 | Anita Horvat |  Slovenia |
51.94 | Q, NR |
| 3 | 1 | Laura de Witte | Netherlands |
52.15 | Q, NU23R |
| 4 | 1 | Laura Müller | Germany |
52.32 | q |
| 5 | 3 | Laviai Nielsen |  Great Britain |
52.80 | Q |
| 6 | 2 | Modesta Morauskaitė |  Lithuania |
52.81 | Q, PB |
| 7 | 2 | Dominika Muraszewska |  Poland |
52.88 | q, PB |
| 8 | 2 | Kateryna Klymyuk |  Ukraine |
52.90 | |
| 9 | 3 | Déborah Sananes |  France |
52.96 | Q |
| 10 | 3 | Adrianna Janowicz | Poland |
53.07 | PB |
| 11 | 2 | Evelin Nádházy |  Hungary |
53.22 | PB |
| 12 | 3 | Eva Hovenkamp | Netherlands |
53.25 | |
| 13 | 1 | Alexandra Troiani |  Italy |
53.47 | PB |
| 14 | 3 | Ylenia Vitale | Italy |
53.58 | |
| 15 | 1 | Mariola Karaś | Poland |
53.78 | |
| 16 | 2 | Susanne Walli |  Austria |
53.94 | SB |
| 17 | 1 | Despina Mourta |  Greece |
54.02 | |
| 18 | 2 | Sara Dorthea Jensen |  Norway |
54.06 | SB |
| 19 | 3 | Helena Jiranová |  Czech Republic |
54.20 | |
| 20 | 1 | Jenna Bromell |  Ireland |
54.34 | |
| 21 | 2 | Virginia Troiani | Italy |
54.44 | |
| 22 | 3 | Maja Pogorevc | Slovenia |
54.59 | |
| 23 | 1 | Anja Benko | Slovenia |
54.99 | |
| 24 | 3 | Sophie Becker | Ireland |
54.99 | |
| 25 | 3 | Vijona Kryeziu |  Kosovo |
57.53 | SB |
Final[edit]
15 July[2]
| Rank | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
 |
4 | Gunta Latiševa-Čudare | Latvia |
52.00 | |
 |
3 | Laura Müller | Germany |
52.42 | |
 |
5 | Laura de Witte | Netherlands |
52.51 | |
| 4 | 7 | Anita Horvat | Slovenia |
53.06 | |
| 5 | 6 | Laviai Nielsen | Great Britain |
53.18 | |
| 6 | 2 | Dominika Muraszewska | Poland |
53.62 | |
| 7 | 9 | Modesta Morauskaitė | Lithuania |
54.06 | |
| 8 | 8 | Déborah Sananes | France |
54.25 |