| Final 21:35 | | time | | | 1. Jakob Ingebrigtsen |  Norway | 3:37.56 | | | 2. Marcin Lewandowski |  Poland | 3:38.06 | | | 3. Jesús Gómez |  Spain | 3:38.47 | | | 4. Ignacio Fontes | Spain | 3:39.66 | | | 5. Piers Copeland |  Great Britain | 3:39.99 | | | 6. Michał Rozmys | Poland | 3:40.11 | | | 7. Andrew Coscoran |  Ireland | 3:40.38 | | | 8. István Szögi |  Hungary | 3:40.40 | | | 9. Filip Sasínek |  Czechia | 3:40.64 | | | 10.Paul Robinson | Ireland | 3:40.74 | | | 11.Jan Friš | Czechia | 3:42.97 | | | 12.Neil Gourley | Great Britain | 3:45.99 | | | 13.Stijn Baeten |  Belgium | 3:46.31 | |
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| Round | H | Ath | date | | Heats | 4 | 51 | 04.03 |
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Jakob Ingebritsen was initially disqualified for stepping out of the lane. Subsequently, the jury accepted the Norwegian team's apeal, as Ingebritsen had been forsed to foul because he was closed by the two Polish, but that had not gained any advantage from this.
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Heats - Thursday, 4th March 20:20 | | First 3 from each Heat and next 3 Best times advanced to Final. |
| Heat 1 | | time | | | 11.Jesús Gómez | Spain | 3:40.75 | Q | | 12.Michał Rozmys | Poland | 3:40.92 | Q | | 14.Charles Grethen |  Luxembourg | 3:41.07 | | | 20.Filip Ingebrigtsen | Norway | 3:41.52 | | | 21.Baptiste Mischler |  France | 3:41.52 | | | 25.Simas Bertašius |  Lithuania | 3:42.17 | | | 27.Valentijn Weinans |  Netherlands | 3:42.34 | | | 30.Oussama Lonneux | Belgium | 3:42.68 | | | 35.Leo Magnusson |  Sweden | 3:44.37 | | | 37.Joao Bussotti |  Italy | 3:44.76 | | | 42.Artem Alfimov |  Ukraine | 3:46.05 | | | 48.Kristian Uldbjerg Hansen |  Denmark | 3:50.18 | |
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| Heat 2 | | time | | | 1. Ignacio Fontes | Spain | 3:38.68 | Q | | 2. Piers Copeland | Great Britain | 3:38.88 | Q | | 3. Andrew Coscoran | Ireland | 3:39.00 | q | | 4. István Szögi | Hungary | 3:39.10 | q | | 22.Azeddine Habz | France | 3:41.55 | | | 23.Jacob Boutera | Norway | 3:41.69 | PB | | 29.Homiyu Tesfaye |  Germany | 3:42.59 | | | 32.Mikael Johnsen | Denmark | 3:43.76 | | | 34.Isaac Nader |  Portugal | 3:44.15 | | | 39.Adam Czerwiński | Poland | 3:45.13 | | | 43.Johan Rogestedt | Sweden | 3:47.58 | | | 46.Mahadi Abdi Ali | Netherlands | 3:48.02 | | | -. Michael Somers | Belgium | DQ | |
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| Heat 3 | | time | | | 6. Neil Gourley | Great Britain | 3:39.84 | Q | | 7. Jakob Ingebrigtsen | Norway | 3:39.89 | Q | | 13.Jan Friš | Czechia | 3:40.99 | qR | | 15.Andreas Holst Lindgreen | Denmark | 3:41.25 | PB | | 16.Luke McCann | Ireland | 3:41.25 | | | 17.Karl Bebendorf | Germany | 3:41.29 | | | 24.Bram Anderiessen | Netherlands | 3:42.13 | | | 26.Mitko Tsenov |  Bulgaria | 3:42.21 | PB | | 28.Nuno Pereira | Portugal | 3:42.38 | | | 31.Pietro Arese | Italy | 3:43.55 | | | 33.Andreas Dimitrakis |  Greece | 3:44.05 | | | 44.Samuel Pihlström | Sweden | 3:47.66 | | | 45.Gergő Kiss | Hungary | 3:47.96 | |
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| Heat 4 | | time | | | 5. Marcin Lewandowski | Poland | 3:39.78 | Q | | 8. Filip Sasínek | Czechia | 3:40.04 | Q | | 9. Paul Robinson | Ireland | 3:40.07 | q | | 10.Stijn Baeten | Belgium | 3:40.40 | q | | 18.Joonas Rinne |  Finland | 3:41.40 | PB | | 19.Archie Davis | Great Britain | 3:41.40 | SB | | 36.Marius Probst | Germany | 3:44.63 | | | 38.Simon Denissel | France | 3:44.94 | | | 40.Márton Pápai | Hungary | 3:45.63 | | | 41.Federico Riva | Italy | 3:45.85 | | | 47.Abderrahman El Khayami | Spain | 3:49.34 | | | 49.José Carlos Pinto | Portugal | 3:56.44 | | | 50.Bob Bertemes | Luxembourg | 3:58.08 | |
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