| Final | | time | | | 1. Du'aine Ladejo |  Great Britain | 46.12s | | | 2. Pierre-Marie Hilaire |  France | 46.82s | | | 3. Ashraf Saber |  Italy | 46.86s | | | 4. Julian Voelkel |  Germany | 47.05s | |
| Final | | time | | | 5. Vadim Zadoynov |  Moldova | 47.09s | NR | | 6. Lukáš Souček |  Czechia | 47.20s | | | 7. Ingûns Sviklinš |  Latvia | 47.22s | | | -. Carlos Silva |  Portugal | DQ | |
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| | Winners of each Heat and next Best time advanced to Final. Next 4 Best times advanced to Final B. |
| Semi 1 | | time | | | 1. Du'aine Ladejo | Great Britain | 46.74s | Q | | 5. Carlos Silva | Portugal | 47.40s | qB | | 9. Tom McGuirk |  Ireland | 47.66s | | | 10.Aleksandr Dobryanskiy |  Russia | 47.79s | |
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| Semi 2 | | time | | | 3. Pierre-Marie Hilaire | France | 47.19s | Q | | 4. Julian Voelkel | Germany | 47.34s | q | | 11.Kent Ulyatt | Great Britain | 52.05s | | | -. Fabio Grossi | Italy | DQ | |
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| Semi 3 | | time | | | 2. Ashraf Saber | Italy | 47.09s | Q | | 6. Lukáš Souček | Czechia | 47.43s | qB | | 7. Vadim Zadoynov | Moldova | 47.54s | qB | | 8. Ingūns Svikliņš | Latvia | 47.56s | qB |
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| | | First 2 from each Heat and next Best 3 advanced to Semi-Finals. |
| Heat 1 | | time | | | 1. Ashraf Saber | Italy | 47.29s | Q | | 4. Lukáš Souček | Czechia | 47.52s | Q | | -. Evripides Demosthenous |  Cyprus | DQ | |
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| Heat 2 | | time | | | 2. Kent Ulyatt | Great Britain | 47.41s | Q | | 3. Fabio Grossi | Italy | 47.48s | Q | | 6. Julian Voelkel | Germany | 47.55s | q | | 7. Vadim Zadoynov | Moldova | 47.64s | q |
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| Heat 3 | | time | | | 9. Du'aine Ladejo | Great Britain | 47.84s | Q | | 12.Carlos Silva | Portugal | 48.03s | Q | | 13.Bruno Wavelet | France | 48.07s | | | 17.Bülent Eren |  Turkey | 49.41s | |
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| Heat 4 | | time | | | 14.Ingūns Svikliņš | Latvia | 48.09s | Q | | 15.Aleksandr Dobryanskiy | Russia | 48.11s | Q | | 16.Konstantinos Kenteris |  Greece | 48.20s | | | -. Dusán Kovács |  Hungary | DQ | |
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| Heat 5 | | time | | | 5. Tom McGuirk | Ireland | 47.73s | Q | | 8. Pierre-Marie Hilaire | France | 47.81s | Q | | 10.Matija ŀestak |  Slovenia | 47.88s | | | 11.Alexander Müller | Germany | 47.91s | |
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