| Final | | time | | F | | 1. Todd Bennett |  Great Britain | 45.56s | WB | 3 | | 2. Klaus Just |  West Germany | 45.90s | | 4 | | 3. José Alonso |  Spain | 46.52s | | 5 | | 4. Roberto Tozzi |  Italy | 46.66s | | 1 | | 5. šngel Heras | Spain | 46.68s | | 2 |
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| | First 2 from each Semi and next 1 Best advanced to Final. |
| Semi 1 | | time | | | 1. Todd Bennett | Great Britain | 46.45s | Q | | 2. Klaus Just | West Germany | 46.63s | Q | | 5. José Alonso | Spain | 46.98s | q | | 6. Roberto Ribaud | Italy | 47.18s | | | 8. Gusztáv Menczer |  Hungary | 47.38s | |
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| Semi 2 | | time | | | 3. šngel Heras | Spain | 46.70s | Q | | 4. Roberto Tozzi | Italy | 46.97s | Q | | 7. Andrzej Stępień |  Poland | 47.23s | | | 9. Roger Black | Great Britain | 49.67s | | | -. Uwe Wegner | West Germany | DNF | |
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Heats - Saturday, 2nd March | | First 2 from each Heat and next Best 2 advanced to Semi-Finals. |
| Heat 1 | | time | | | 1. Todd Bennett | Great Britain | 46.71s | Q | | 3. Andrzej Stępień | Poland | 47.08s | Q, PB | | 5. Gusztáv Menczer | Hungary | 47.20s | q | | 11.Marcel Arnold |  Switzerland | 47.41s | | | 17.Andreas Rapek |  Austria | 48.05s | |
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| Heat 2 | | time | | | 2. šngel Heras | Spain | 46.83s | Q | | 7. Roberto Ribaud | Italy | 47.30s | Q | | 13.Kriss Akabusi | Great Britain | 47.58s | | | 16.Jari Niemelä |  Finland | 47.91s | | | 18.Ján Tomko |  Czechoslovakia | 48.06s | |
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| Heat 3 | | time | | | 4. Klaus Just | West Germany | 47.16s | Q | | 6. Roberto Tozzi | Italy | 47.26s | Q | | 8. Roger Black | Great Britain | 47.36s | q | | 14.István Szabó | Hungary | 47.66s | |
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| Heat 4 | | time | | | 9. Uwe Wegner | West Germany | 47.37s | Q | | 10.José Alonso | Spain | 47.39s | Q | | 12.Arjen Visserman |  Netherlands | 47.48s | | | 15.Athanassios Kalogiannis |  Greece | 47.76s | |
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