# 2017 European Athletics U23 Championships – Men's 400 metres hurdles

The men's 400 metres hurdles event at the 2017 European Athletics U23 Championships was held in Bydgoszcz, Poland, at Zdzisław Krzyszkowiak Stadium on 14, 15 and 16 July.

## Medalists

| Gold | Karsten Warholm Norway |
| Silver | Dany Brand Switzerland |
| Bronze | Ludvy Vaillant France |

## Records

Prior to the competition, the records were as follows:
| European U23 record | Harald Schmid (FRG) | 47.85 | Turin, Italy | 4 August 1979 |
| Championship U23 record | Marek Plawgo (POL) | 48.45 | Bydgoszcz, Poland | 19 July 2003 |

## Results
### Heats

14 July
Qualification rule: First 3 (Q) and the next 4 fastest (q) qualified for the semifinals.
| Rank | Heat | Name | Nationality | Time | Notes |
| 1 | 1 | Ludvy Vaillant | France | 50.38 | Q |
| 2 | 1 | Jack Lawrie | Great Britain | 50.40 | Q |
| 3 | 2 | Dany Brand | Switzerland | 50.45 | Q, PB |
| 4 | 4 | Isak Andersson | Sweden | 50.69 | Q |
| 5 | 3 | Karsten Warholm | Norway | 50.88 | Q |
| 6 | 1 | Dylan Owusu | Belgium | 50.97 | Q |
| 7 | 4 | Jacob Paul | Great Britain | 51.04 | Q |
| 8 | 3 | Jonas Hanßen | Germany | 51.06 | Q |
| 9 | 2 | Victor Coroller | France | 51.12 | Q |
| 10 | 1 | Joachim Sandberg | Norway | 51.19 | q |
| 11 | 1 | Joshua Abuaku | Germany | 51.33 | q |
| 12 | 4 | Alain-Hervé Mfomkpa | Switzerland | 51.45 | Q |
| 13 | 2 | Dominik Hufnagl | Austria | 51.48 | Q |
| 14 | 4 | Javier Delgado | Spain | 51.52 | q |
| 15 | 2 | Vít Müller | Czech Republic | 51.69 | q |
| 16 | 3 | Martin Tuček | Czech Republic | 51.79 | Q |
| 17 | 2 | Alexander Lundskog | Sweden | 51.88 | |
| 18 | 1 | Diogo Mestre | Portugal | 52.00 | |
| 19 | 4 | Matěj Mach | Czech Republic | 52.20 | |
| 20 | 3 | Mattia Tajana | Switzerland | 52.28 | |
| 21 | 4 | Mateo Parlov | Croatia | 52.60 | |
| 22 | 3 | Enis Ünsal | Turkey | 53.15 | |
| 23 | 2 | Matteo Beria | Italy | 53.16 | |
| 24 | 4 | Andrea Ercolani Volta | San Marino | 53.45 | |
| 25 | 3 | Nikolay Nikolov | Bulgaria | 53.53 | |
| | 3 | Nick Smidt | Netherlands | DQ | R168.7 |

### Semifinals

15 July
Qualification rule: First 3 (Q) and the next 2 fastest (q) qualified for the final.
| Rank | Heat | Name | Nationality | Time | Notes |
| 1 | 2 | Karsten Warholm | Norway | 49.29 | Q |
| 2 | 2 | Victor Coroller | France | 49.30 | Q, PB |
| 3 | 2 | Dany Brand | Switzerland | 49.37 | Q, PB |
| 4 | 1 | Ludvy Vaillant | France | 49.55 | Q, PB |
| 5 | 1 | Jacob Paul | Great Britain | 49.85 | Q |
| 6 | 1 | Isak Andersson | Sweden | 50.05 | Q |
| 7 | 1 | Vít Müller | Czech Republic | 50.37 | q |
| 8 | 2 | Jack Lawrie | Great Britain | 50.46 | q |
| 9 | 1 | Jonas Hanßen | Germany | 50.67 | SB |
| 10 | 1 | Dominik Hufnagl | Austria | 50.74 | PB |
| 11 | 2 | Joshua Abuaku | Germany | 50.79 | PB |
| 12 | 1 | Alain-Hervé Mfomkpa | Switzerland | 50.92 | |
| 13 | 1 | Joachim Sandberg | Norway | 51.12 | |
| 14 | 2 | Martin Tuček | Czech Republic | 51.64 | |
| 15 | 2 | Dylan Owusu | Belgium | 53.10 | |
| | 2 | Javier Delgado | Spain | DQ | R168.7 |

### Final

16 July
| Rank | Lane | Name | Nationality | Time | Notes |
| | 5 | Karsten Warholm | Norway | 48.37 | CR |
| | 8 | Dany Brand | Switzerland | 49.14 | NU23R |
| | 4 | Ludvy Vaillant | France | 49.31 | PB |
| 4 | 6 | Victor Coroller | France | 49.96 | |
| 5 | 7 | Jacob Paul | Great Britain | 49.98 | |
| 6 | 9 | Isak Andersson | Sweden | 50.08 | |
| 7 | 2 | Jack Lawrie | Great Britain | 50.60 | |
| 8 | 3 | Vít Müller | Czech Republic | 50.63 | |