EVENT 404 Boys 11/14 Yrs 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 3 | 1 | Ethan COURTS | 12 | Severnside | 6:12.16 |
| 4 | 2 | Toby FOSTER | 12 | Clevedon | 6:11.50 |
| 5 | 3 | Anthony DAVIES | 12 | Millfield | 6:09.32 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 2 | 4 | Nathan NEEDS | 12 | Exeter City | 6:06.12 |
| 3 | 5 | Alex BRIDGES | 12 | Soundwell | 6:05.73 |
| 4 | 6 | Lawrence ELLIOTT | 12 | Seagulls SC | 6:04.84 |
| 5 | 7 | Samuel ELLIS | 12 | Plymouth Lea | 6:04.12 |
| 6 | 8 | Amos STARKEY | 12 | Gloucester | 6:01.65 |
| 7 | 9 | Oscar BARLOW | 12 | TauntonDeane | 5:57.10 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 10 | Lorenzo ROBERTSON-MORO | 12 | Exeter City | 5:56.99 |
| 2 | 11 | Charlie ROWE | 12 | South Dorset | 5:54.39 |
| 3 | 12 | Carter STUHLMACHER | 13 | Poole | 5:54.14 |
| 4 | 13 | Ryan LAWRENCE | 13 | TigersharksW | 5:52.81 |
| 5 | 14 | Connor TALBOT | 13 | Co Bristol | 5:50.38 |
| 6 | 15 | Storm MUNDAY | 12 | Millfield | 5:48.90 |
| 7 | 16 | Thomas DORAN | 13 | Salisbury | 5:48.74 |
| 8 | 17 | Ethan PHILIPSON | 13 | Plymouth Lea | 5:48.56 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 18 | Liam JORDAN | 13 | Exeter City | 5:45.75 |
| 2 | 19 | Magnus KELLY | 12 | Millfield | 5:40.90 |
| 3 | 20 | Oliver WATTS | 12 | Team Bath AS | 5:39.52 |
| 4 | 21 | Ryan OPENSHAW | 12 | Poole | 5:37.43 |
| 5 | 22 | Jake TURNER | 13 | Soundwell | 5:35.89 |
| 6 | 23 | Archie TYERS | 13 | Exeter City | 5:32.53 |
| 7 | 24 | Harrison CROOK | 13 | Swindon Dolp | 5:32.17 |
| 8 | 25 | James ANDREW | 13 | TigersharksW | 5:32.13 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 26 | Henry OSBORNE | 13 | Truro City | 5:31.96 |
| 2 | 27 | Luca GUNAWARDENA | 14 | Utd Bristol | 5:31.89 |
| 3 | 28 | Oliver SAUNDERS | 12 | Team Bath AS | 5:30.60 |
| 4 | 29 | Finlay SAUNDERS | 14 | Team Bath AS | 5:30.07 |
| 5 | 30 | Arthur BOWN-MAZZONI | 14 | Team Bath AS | 5:28.46 |
| 6 | 31 | Alec FARQUHARSON | 14 | Paignton | 5:27.10 |
| 7 | 32 | Harry POLKINGHORNE | 12 | Truro City | 5:26.50 |
| 8 | 33 | Oscar PEARCEY | 14 | Swindon Dolp | 5:26.33 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 34 | Clement KUBICA | 14 | Millfield | 5:26.00 |
| 2 | 35 | Paul O'LOUGHLIN | 12 | Plymouth Lea | 5:25.80 |
| 3 | 36 | Robbie HEMMINGS | 13 | Poole | 5:25.41 |
| 4 | 37 | Wyatt WALSH | 14 | Millfield | 5:25.30 |
| 5 | 38 | Jamie BREW | 14 | Mt Kelly | 5:21.38 |
| 6 | 39 | Hubert GDANIEC | 13 | Plymouth Lea | 5:20.80 |
| 7 | 40 | George COOK | 14 | Weston S M | 5:20.25 |
| 8 | 41 | Liam OPENSHAW | 14 | Poole | 5:20.01 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 42 | Evan JONES | 13 | Millfield | 5:17.90 |
| 2 | 43 | David O'LOUGHLIN | 13 | Plymouth Lea | 5:16.50 |
| 3 | 44 | Thomas TREBILCOCK | 14 | Truro City | 5:15.58 |
| 4 | 45 | Alexander PAINTER | 13 | Millfield | 5:15.40 |
| 5 | 46 | Farran GREGORY | 13 | Wellington W | 5:13.83 |
| 6 | 47 | Samuel ARROWSMITH | 14 | Tiverton | 5:13.36 |
| 7 | 48 | Joseph GILES | 14 | Cirencester | 5:11.90 |
| 8 | 49 | Luca RIEZZO | 14 | Exeter City | 5:08.00 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 51 | Calvin FRY | 13 | Millfield | 5:05.45 |
| 2 | 53 | Henry RIDEOUT | 14 | Swindon Dolp | 4:59.84 |
| 3 | 55 | Jayden WORDLEY | 14 | Team Bath AS | 4:56.67 |
| 4 | 57 | William ELLINGTON | 14 | Millfield | 4:49.90 |
| 5 | 56 | Salvador GORDO | 14 | Plymouth Lea | 4:55.43 |
| 6 | 54 | Ben PENHALE | 14 | Clevedon | 4:59.00 |
| 7 | 52 | Dylan GALLAGHER | 14 | TauntonDeane | 5:03.90 |
| 8 | 50 | Miles WARD | 14 | Seagulls SC | 5:06.15 |