EVENT 201 Mixed 12 Yrs/Under 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 1 | Muhammad RAZA | 12 | Co Leeds | 7:06.41 |
| 1 | 3 | Theo SIRA | 10 | Co Leeds | 7:00.00 |
| 2 | 5 | Martha NEWMAN | 9 | Co Leeds | 6:45.00 |
| 3 | 7 | Isabella HUTCHISON | 9 | Co Leeds | 6:35.00 |
| 4 | 9 | Qian SHEN | 10 | Co Leeds | 6:24.70 |
| 5 | 8 | Mustafa RAZA | 10 | Co Leeds | 6:30.45 |
| 6 | 6 | Jessica DJIEGOUE | 11 | Co Leeds | 6:40.00 |
| 7 | 4 | Matilda SHERLEY-PRICE | 9 | Co Leeds | 6:50.00 |
| 8 | 2 | Lucy WARD | 11 | Settle Srays | 7:00.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 11 | Emilia DEVERILL | 11 | Co Leeds | 6:23.40 |
| 1 | 13 | Finn EASINGWOOD | 11 | Co Leeds | 6:15.55 |
| 2 | 15 | Francesca SPALDING | 10 | Co Leeds | 6:14.60 |
| 3 | 17 | Madeleine FLAHERTY | 10 | Co Leeds | 6:10.80 |
| 4 | 19 | Ava MCLARKEY | 10 | Co Leeds | 6:06.80 |
| 5 | 18 | Emilia GRAVILLE | 10 | Co Leeds | 6:10.00 |
| 6 | 16 | Michelle BROGDEN | 9 | Co Leeds | 6:14.18 |
| 7 | 14 | Harrison NORTON | 11 | Co Leeds | 6:15.00 |
| 8 | 12 | Olive MITCHELL | 10 | Co Leeds | 6:20.94 |
| 9 | 10 | Ada BARKER | 11 | Settle Srays | 6:24.40 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 21 | Katie SADLER | 10 | Co Leeds | 5:55.20 |
| 1 | 23 | Harley GILL | 12 | Co Leeds | 5:48.03 |
| 2 | 25 | Amy BARKER | 11 | Lincoln Vulc | 5:45.58 |
| 3 | 27 | Alex BOYD | 11 | Co Leeds | 5:41.80 |
| 4 | 29 | Evie COOK | 11 | Co Leeds | 5:40.60 |
| 5 | 28 | Isla CUNDILL | 11 | Co Leeds | 5:41.80 |
| 6 | 26 | Euan CARMODY | 10 | Co Leeds | 5:41.80 |
| 7 | 24 | Evie THORPE | 12 | Co Leeds | 5:46.00 |
| 8 | 22 | Zachary HOGG | 11 | Co Bradford | 5:54.95 |
| 9 | 20 | Betsy KIRKLEY | 11 | Co Leeds | 6:05.00 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 31 | Madeline BECKRAM | 11 | Co Leeds | 5:40.00 |
| 1 | 33 | Oscar CALAM | 11 | Co Leeds | 5:36.40 |
| 2 | 35 | Evelyn ATKINSON | 10 | Co Leeds | 5:31.50 |
| 3 | 37 | Bailey GRAHAM | 12 | Settle Srays | 5:30.30 |
| 4 | 39 | William SMITH | 12 | Co Bradford | 5:29.80 |
| 5 | 38 | Zachary WHITTAKER | 11 | Co Leeds | 5:30.00 |
| 6 | 36 | Ted WINGFIELD | 10 | Co Leeds | 5:30.90 |
| 7 | 34 | Barney HOBBS | 11 | Co Leeds | 5:34.90 |
| 8 | 32 | Henry PATTERSON | 10 | Co Leeds | 5:38.00 |
| 9 | 30 | George RICKETTS | 11 | Co Leeds | 5:40.50 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 41 | Solomon COFFEY-WILLS | 11 | Co Leeds | 5:28.80 |
| 1 | 43 | Tomas BICKERS | 12 | Co Leeds | 5:21.50 |
| 2 | 45 | Neve STAFFORD | 11 | Co Leeds | 5:20.70 |
| 3 | 47 | Livia STACEY | 12 | Co Leeds | 5:18.30 |
| 4 | 49 | Willow WRIGHT | 11 | Co Leeds | 5:16.50 |
| 5 | 48 | Hogan LAM | 12 | Co Leeds | 5:17.59 |
| 6 | 46 | Amelia MATSON | 12 | Co Leeds | 5:18.30 |
| 7 | 44 | Zoe FEATHER | 11 | Co Leeds | 5:21.20 |
| 8 | 42 | Evie NEWMAN | 11 | Lincoln Vulc | 5:25.52 |
| 9 | 40 | Isabelle LOK | 10 | Co Leeds | 5:29.32 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 51 | Jacob JONES | 12 | Co Leeds | 5:14.48 |
| 1 | 53 | Oscar HUSSEY | 12 | Co Leeds | 5:07.30 |
| 2 | 55 | Jessica ROLLINGS | 12 | Co Leeds | 5:02.30 |
| 3 | 57 | James HUCKLE | 12 | Lincoln Vulc | 4:53.80 |
| 4 | 59 | Emily TALKES | 12 | Lincoln Vulc | 4:46.30 |
| 5 | 58 | Olaf GRUDOWSKI | 12 | Co Leeds | 4:52.30 |
| 6 | 56 | Leo LI | 12 | Co Leeds | 4:57.90 |
| 7 | 54 | Sophie BARR | 11 | Prescot | 5:07.26 |
| 8 | 52 | Oliver BARKER | 11 | Co Leeds | 5:13.40 |
| 9 | 50 | Eva SYLVESTER | 12 | Co Leeds | 5:16.00 |