EVENT 101 Boy/Girl 12 Yrs/Over 800m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 1 | Isabella GRIMBALDESTON | 12 | | Leyland Barr | 14:17.10 |
| 2 | 2 | Hannah BROWN | 12 | | Co Leeds | 13:04.03 |
| 3 | 3 | Annabel GALBRAITH | 12 | | Co Leeds | 13:00.00 |
| 4 | 4 | Abdullah MOKHLISSE | 13 | | Co Leeds | 12:58.25 |
| 5 | 5 | Rory KING | 12 | | Co Leeds | 12:46.10 |
| 6 | 6 | Izzy BRYANT | 14 | | Carlisle Aq | 12:45.00 |
| 7 | 7 | Daisy BALL | 14 | | Co Wakefield | 12:30.00 |
| 8 | 8 | Sebastian HUNTER | 12 | | Co Leeds | 12:30.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 9 | Emily MARRISON | 12 | | Co Leeds | 12:30.00 |
| 1 | 10 | Daisy BRANNEN | 12 | | Co Leeds | 12:30.00 |
| 2 | 11 | Yassin ELSHAZLY | 14 | | Co Leeds | 12:25.90 |
| 3 | 12 | Amit MALTZ | 12 | | Co Leeds | 12:01.77 |
| 4 | 13 | Ava BRADLEY | 12 | | Co Leeds | 12:00.00 |
| 5 | 14 | Elizabeth WARNER | 12 | | Co Leeds | 12:00.00 |
| 6 | 15 | Olivia Mary ROBINSON | 16 | | Leyland Barr | 11:53.10 |
| 7 | 16 | Evie-Rose SUGDEN | 15 | | Carlisle Aq | 11:46.90 |
| 8 | 17 | William SHEARS | 13 | | Chorley Marl | 11:45.72 |
| 9 | 18 | EVIE LAMBERT | 15 | S9 | Bo Kirklees | 11:40.00 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 19 | Tylan FLETCHER | 13 | | Co Leeds | 11:31.71 |
| 1 | 20 | Robyn HOWARD | 12 | | Co Leeds | 11:24.36 |
| 2 | 21 | Lily JINKS | 12 | | Cheadle | 11:21.60 |
| 3 | 22 | Imogen MOLLART | 13 | | Leek | 11:12.60 |
| 4 | 23 | Lea GLENCROSS | 14 | | Carlisle Aq | 11:08.90 |
| 5 | 24 | Caitlin HULME | 12 | | Bolton | 11:05.23 |
| 6 | 25 | Eleanor BRIDGMAN | 14 | | Co Wakefield | 11:00.00 |
| 7 | 26 | Sienna SCOTT | 13 | | Biddulph | 10:57.50 |
| 8 | 27 | Ella JORDAN | 12 | | Co Leeds | 10:51.10 |
| 9 | 28 | Aimee KEEFE | 12 | | Co Wakefield | 10:50.58 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 29 | Isabel FARMER | 15 | | Bo Kirklees | 10:50.00 |
| 1 | 30 | Owen JOHNSON | 14 | S10 | Repton | 10:48.00 |
| 2 | 31 | Amelia MOSS | 16 | | Burnley BOBC | 10:45.25 |
| 3 | 32 | Caitlyn SMITH | 13 | | Co Leeds | 10:42.39 |
| 4 | 33 | Olivia BALLARD | 14 | | Leyland Barr | 10:42.24 |
| 5 | 34 | Jasmine BULLOUGH-TEAL | 15 | | Burnley BOBC | 10:30.54 |
| 6 | 35 | Owen CARMODY | 12 | | Co Leeds | 10:30.00 |
| 7 | 36 | Noah CARTLIDGE | 12 | | Biddulph | 10:27.00 |
| 8 | 37 | Millie WALKER | 13 | | Co Leeds | 10:26.39 |
| 9 | 38 | Caitlin O'BRIEN | 18 | | Blackpool Aq | 10:24.14 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 39 | Rose KEEFE | 14 | | Co Wakefield | 10:23.61 |
| 1 | 40 | Bethan ROBERTS | 16 | | Stretford | 10:18.90 |
| 2 | 41 | Daniel ROCHE | 13 | | Leamington | 10:17.19 |
| 3 | 42 | Andrew TEALE | 14 | | Bo Kirklees | 10:15.00 |
| 4 | 43 | Thomas BROOKS | 14 | | Bo Kirklees | 10:14.46 |
| 5 | 44 | Emelia ATKINSON | 13 | | Co Salford | 10:12.79 |
| 6 | 45 | Jessica SMELT | 15 | | Bo Kirklees | 10:12.00 |
| 7 | 46 | Emma WOOD | 14 | | Co Leeds | 10:09.95 |
| 8 | 47 | Matilda ASHCROFT | 14 | | Co Leeds | 10:08.23 |
| 9 | 48 | Millie PLUMLEY | 14 | | Biddulph | 10:07.40 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 49 | Evie HARRIS | 14 | | Co Leeds | 10:05.08 |
| 1 | 50 | Isabel HANDLEY | 13 | | Co Leeds | 10:05.00 |
| 2 | 51 | Alex NEWTON | 14 | | Co Leeds | 10:04.55 |
| 3 | 52 | Megan DOHERTY | 14 | | Leyland Barr | 10:03.30 |
| 4 | 53 | Emily WADE | 14 | | Leyland Barr | 10:03.30 |
| 5 | 54 | Oliver STEELE | 15 | | Co Leeds | 10:01.70 |
| 6 | 55 | Maxwell FORD | 14 | | Co Leeds | 9:59.49 |
| 7 | 56 | Arthur OWENS | 13 | | Co Leeds | 9:55.00 |
| 8 | 57 | Lillie BRYANT | 18 | | Bo Kirklees | 9:52.10 |
| 9 | 58 | Charlotte MORETON | 14 | | Co Leeds | 9:48.64 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 60 | Harry SENIOR | 15 | | Co Leeds | 9:47.23 |
| 1 | 62 | Darcey CROSSLEY | 14 | | Co Leeds | 9:43.30 |
| 2 | 64 | Sedona REED | 15 | | Co Leeds | 9:36.51 |
| 3 | 66 | Henry KING | 16 | | Bo Kirklees | 9:28.00 |
| 4 | 68 | Luke CLEGG | 17 | | Bo Kirklees | 8:50.00 |
| 5 | 67 | Charlie BROOME | 18 | | Co Leeds | 8:51.93 |
| 6 | 65 | Rhys POWNALL | 13 | | Leyland Barr | 9:30.00 |
| 7 | 63 | Lauren LILLEY | 14 | | Co Leeds | 9:40.74 |
| 8 | 61 | James ROBINSON | 17 | | Co Leeds | 9:45.60 |
| 9 | 59 | Aaron JOHNSON | 16 | | Repton | 9:48.00 |