EVENT 102 Open/Male 12 /Over 1500m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 2 | Vincent TINSLEY | 13 | Nuneaton | 20:46.97 |
| 1 | 4 | Ethan BENT | 15 | Stockport Mo | 20:11.65 |
| 2 | 6 | Casey COSTAIN | 14 | Wirral Metro | 19:21.10 |
| 3 | 8 | Dexter WOODWARD | 16 | Co Bradford | 19:15.20 |
| 4 | 10 | Dante PALMER | 13 | Nova Cent'n | 19:00.80 |
| 5 | 9 | Luke DYE | 16 | Nova Cent'n | 19:06.08 |
| 6 | 7 | Matthew MENZER | 18 | Co Wakefield | 19:19.57 |
| 7 | 5 | George KING | 13 | Co Leeds | 19:24.91 |
| 8 | 3 | Brodie CHARLESWORTH | 17 | Bo Barnsley | 20:26.90 |
| 9 | 1 | Jack-James BULL | 13 | Nuneaton | 21:46.50 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 12 | Daniel FRENCH | 14 | Wirral Metro | 19:00.27 |
| 1 | 14 | Theo CADAMY | 14 | Newcastle | 18:50.33 |
| 2 | 16 | Oliver ATHA | 14 | Co Leeds | 18:46.27 |
| 3 | 18 | Oscar HUSSEY | 13 | Co Leeds | 18:38.89 |
| 4 | 20 | Oliver BARRETT | 14 | Co Leeds | 18:36.71 |
| 5 | 19 | Jacob IRVING | 14 | Co Liverpool | 18:36.77 |
| 6 | 17 | Oscar FOCHT | 13 | KingstonHull | 18:39.20 |
| 7 | 15 | Olaf GRUDOWSKI | 14 | Co Leeds | 18:47.97 |
| 8 | 13 | Alfie CRAGGS | 14 | Co Leeds | 18:57.24 |
| 9 | 11 | Jude NEWEY-KEANE | 14 | Co Birm'ham | 19:00.55 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 22 | Ewan PEARCE | 17 | Nuneaton | 18:25.10 |
| 1 | 24 | Oscar O'DONNELL | 13 | Co Leeds | 18:18.69 |
| 2 | 26 | Jeffrey LANGE | 14 | Co Leeds | 18:11.03 |
| 3 | 28 | Noah DARNELL | 14 | Co Leeds | 18:04.17 |
| 4 | 30 | George HARRISON | 14 | KingstonHull | 17:53.09 |
| 5 | 29 | Thomas RICKELS | 14 | Co Liverpool | 17:58.44 |
| 6 | 27 | Lewis HALL | 14 | KingstonHull | 18:06.71 |
| 7 | 25 | William KITE | 16 | Louth | 18:14.60 |
| 8 | 23 | William KERSHAW | 15 | Blackpool Aq | 18:22.42 |
| 9 | 21 | Edward GREGORY | 13 | Nova Cent'n | 18:28.95 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 32 | Rafael PASSOS | 16 | Nuneaton | 17:50.00 |
| 1 | 34 | Oliver INGHAM | 17 | Co Salford | 17:47.40 |
| 2 | 36 | Finlay GODDEN | 15 | Nuneaton | 17:36.90 |
| 3 | 38 | Matthew JAMES | 17 | Co Leeds | 17:34.76 |
| 4 | 40 | Patrick O'HARA | 15 | Co Leeds | 17:26.61 |
| 5 | 39 | Dylan HILL | 15 | KingstonHull | 17:34.50 |
| 6 | 37 | Samuel HILL | 16 | Co Leeds | 17:35.13 |
| 7 | 35 | Joseph WARING | 16 | Leamington | 17:44.80 |
| 8 | 33 | Daniel BARTON | 15 | Wigan BEST | 17:49.72 |
| 9 | 31 | Owen CARMODY | 15 | Co Leeds | 17:50.78 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 42 | Mathew BRADLEY | 19 | Cleethorpes | 17:25.55 |
| 1 | 44 | Lucas CHRISTIE | 15 | KingstonHull | 17:16.16 |
| 2 | 46 | Jacob BACON | 15 | Co Peterboro | 16:57.70 |
| 3 | 48 | Matthew SAWERS | 16 | Wigan BEST | 16:46.74 |
| 4 | 50 | Luke DYER | 18 | Co Leeds | 16:40.90 |
| 5 | 49 | Zac BAUGHAN-WITHINGTON | 15 | KingstonHull | 16:43.10 |
| 6 | 47 | Samuel GREEN | 15 | Bassetlaw SS | 16:48.80 |
| 7 | 45 | Leo TALBOT | 15 | Bolton | 17:05.92 |
| 8 | 43 | Arthur OWENS | 16 | Co Leeds | 17:18.30 |
| 9 | 41 | Csanad REHUS | 16 | Co Peterboro | 17:26.00 |