EVENT 401 Men 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 1 | Ethan Bent | 11 | | Co Manch Aq | 6:32.30 |
| 2 | 3 | Thomas Hall | 11 | | Co Manch Aq | 6:06.70 |
| 3 | 6 | Alixander Lewis | 12 | | Co Manch Aq | 5:48.65 |
| 4 | 9 | Tyler Atilman | 14 | | Bo Kirklees | 5:29.60 |
| 5 | 8 | Caleb Crowe | 11 | | Io Man | 5:35.00 |
| 6 | 4 | Micah-Noel Schrank | 13 | | Co Manch Aq | 5:51.80 |
| 7 | 2 | Oliver Ingham | 13 | | Co Salford | 6:24.90 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 12 | James Fothergill | 12 | | Flixton | 5:22.80 |
| 2 | 14 | Oli Bottomley | 13 | | Co Salford | 5:15.30 |
| 3 | 16 | Alexander Hornby | 14 | | Tyldesley | 5:09.00 |
| 4 | 18 | Louis Cass | 14 | | Bo Kirklees | 4:56.50 |
| 5 | 17 | John Kinuthia | 14 | | Oldham Aqua | 4:59.00 |
| 6 | 15 | Adam Brown | 13 | | Winsford | 5:12.20 |
| 7 | 13 | Cillian Maitos Cassidy | 13 | | Co Manch Aq | 5:20.70 |
| 8 | 10 | James Farnan | 11 | | Io Man | 5:26.60 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 21 | Daniel Cannavan | 15 | | Aquabears | 4:52.60 |
| 2 | 23 | Eber Clayton | 15 | | Co Manch Aq | 4:46.32 |
| 3 | 25 | R Haliburton-Chaplin | 17 | | Fleetwood | 4:41.00 |
| 4 | 27 | Ryan Coulthard | 18 | | Co Manch Aq | 4:16.60 |
| 5 | 26 | Ethan Lace | 16 | | Io Man | 4:38.00 |
| 6 | 24 | Benjamin Overland | 16 | | Stretford | 4:42.15 |
| 7 | 22 | Oscar Smith | 15 | | Co Manch Aq | 4:51.32 |
| 8 | 19 | Jack Plant | 17 | | Crewe Flyers | 4:55.20 |