EVENT 301 Female 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 2 | Sophia LANGE | 10 | | Co Leeds | 6:51.19 |
| 1 | 4 | Matilda PENNELLS | 9 | | Co Leeds | 6:40.00 |
| 2 | 6 | Ava ALLEN | 10 | | Co Leeds | 6:40.00 |
| 3 | 8 | Ayla CARRY | 11 | | Co Leeds | 6:35.00 |
| 4 | 10 | Eve HEPBURN-WOOD | 11 | | Co Leeds | 6:28.67 |
| 5 | 9 | Nell HARGREAVES | 10 | | Co Leeds | 6:34.12 |
| 6 | 7 | Maria BYRNE-HARRIS | 11 | | RichmondDale | 6:36.80 |
| 7 | 5 | Emma GLOSEK | 10 | | Co Leeds | 6:40.00 |
| 8 | 3 | Freya SIMMONS | 12 | | Stokesley | 6:47.20 |
| 9 | 1 | Sky FLEMING | 14 | S6 | RichmondDale | 8:47.30 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 12 | Jessica DJIEGOUE | 11 | | Co Leeds | 6:15.90 |
| 1 | 14 | Qian SHEN | 10 | | Co Leeds | 6:08.20 |
| 2 | 16 | Emily HARPUR | 12 | | RichmondDale | 6:07.47 |
| 3 | 18 | Verity LILLEY | 12 | | Co Leeds | 6:04.92 |
| 4 | 20 | Michelle BROGDEN | 10 | | Co Leeds | 6:01.70 |
| 5 | 19 | Emilia GRAVILLE | 10 | | Co Leeds | 6:04.70 |
| 6 | 17 | Sophia WEEKS | 11 | | Co Leeds | 6:05.00 |
| 7 | 15 | Francesca SPALDING | 11 | | Co Leeds | 6:07.80 |
| 8 | 13 | Madeleine FLAHERTY | 11 | | Co Leeds | 6:14.50 |
| 9 | 11 | Emilia DEVERILL | 11 | | Co Leeds | 6:20.40 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 22 | Isla HAWKINS | 15 | | Scunthorpe A | 6:00.00 |
| 1 | 24 | Katie SADLER | 10 | | Co Leeds | 5:55.20 |
| 2 | 26 | Ava MCLARKEY | 11 | | Co Leeds | 5:50.90 |
| 3 | 28 | Isla CUNDILL | 11 | | Co Leeds | 5:45.20 |
| 4 | 30 | Christabella TURNER | 16 | | Eckington | 5:43.70 |
| 5 | 29 | Evie COOK | 11 | | Co Leeds | 5:44.72 |
| 6 | 27 | Jessica COLLEY | 11 | | Co Leeds | 5:49.98 |
| 7 | 25 | Caitlin WATSON | 14 | | Borocuda T | 5:53.40 |
| 8 | 23 | Lola BURNETT | 13 | | Scunthorpe A | 5:57.30 |
| 9 | 21 | Millie BINKS | 11 | | Thirsk WH | 6:00.00 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 32 | Evie THORPE | 12 | | Co Leeds | 5:42.40 |
| 1 | 34 | Maya HIGGINS | 11 | | Scunthorpe A | 5:36.05 |
| 2 | 36 | Megan WOODROW | 13 | | Lancaster | 5:33.70 |
| 3 | 38 | Patsy PALLISTER | 14 | | RichmondDale | 5:30.90 |
| 4 | 40 | Eva WILLIAMS | 14 | | Eckington | 5:30.80 |
| 5 | 39 | Harriet BINKS | 13 | | Thirsk WH | 5:30.80 |
| 6 | 37 | Isabelle PARK | 11 | | Co Leeds | 5:33.60 |
| 7 | 35 | Isabella OWEN | 12 | | Horwich | 5:35.90 |
| 8 | 33 | Jesse FIELDING | 15 | | Thirsk WH | 5:41.00 |
| 9 | 31 | Betsy KIRKLEY | 11 | | Co Leeds | 5:43.50 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 42 | Olivia FELGATE | 14 | | Stokesley | 5:29.90 |
| 1 | 44 | Evelyn ATKINSON | 11 | | Co Leeds | 5:23.40 |
| 2 | 46 | Emily WHITBY | 12 | | RichmondDale | 5:22.36 |
| 3 | 48 | Sophie BENTLEY | 13 | | Thirsk WH | 5:21.00 |
| 4 | 51 | Freya HOBLEY | 13 | | Scunthorpe A | 5:18.30 |
| 5 | 49 | Neve STAFFORD | 11 | | Co Leeds | 5:20.50 |
| 6 | 47 | Lucy SUMMERS | 19 | | Thirsk WH | 5:22.30 |
| 7 | 45 | Alexia CALLAN | 13 | | Lancaster | 5:23.10 |
| 8 | 43 | Pinklily TAREK | 13 | | Warrington W | 5:27.04 |
| 9 | 41 | Holly BINKS | 16 | | Thirsk WH | 5:30.00 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 53 | Isla WOODWOOLLEY | 13 | | Stokesley | 5:15.00 |
| 1 | 55 | Livia STACEY | 12 | | Co Leeds | 5:13.90 |
| 2 | 57 | Eva SYLVESTER | 12 | | Co Leeds | 5:11.30 |
| 3 | 59 | Willow WRIGHT | 11 | | Co Leeds | 5:10.40 |
| 4 | 61 | Gracie-Mai SIMPSON | 13 | | RichmondDale | 5:10.30 |
| 5 | 60 | Darcie WILLIS | 17 | | Eckington | 5:10.30 |
| 6 | 58 | Elizabeth BOND | 12 | | Co Leeds | 5:10.57 |
| 7 | 56 | Alex HOLMES | 17 | | Clitheroe | 5:12.90 |
| 8 | 54 | Annabel GALBRAITH | 14 | | Co Leeds | 5:14.10 |
| 9 | 52 | Yarah GHAZAL | 13 | | Lancaster | 5:16.57 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 63 | Elicia RICIOPPO | 16 | | Clitheroe | 5:09.40 |
| 1 | 65 | Ella JORDAN | 14 | | Co Leeds | 5:06.61 |
| 2 | 67 | Jessica ROLLINGS | 12 | | Co Leeds | 5:04.10 |
| 3 | 69 | Emily MARRISON | 14 | | Co Leeds | 5:02.93 |
| 4 | 71 | Alexis ASPIN | 13 | | Preston | 5:00.00 |
| 5 | 70 | Mae HODGSON | 17 | | RichmondDale | 5:00.70 |
| 6 | 68 | Robyn HOWARD | 14 | | Co Leeds | 5:03.80 |
| 7 | 66 | Zoe BOWMAN | 13 | | AJ Newcastle | 5:04.90 |
| 8 | 64 | Erin BENTLEY | 13 | | Co Leeds | 5:07.50 |
| 9 | 62 | Nevaeh GORDON | 15 | | RichmondDale | 5:09.71 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 73 | Evie-Rose TOPPING | 13 | | Co Leeds | 4:57.20 |
| 1 | 75 | Millie WALKER | 15 | | Co Leeds | 4:53.98 |
| 2 | 77 | Phoebe DILWORTH | 12 | | RichmondDale | 4:53.20 |
| 3 | 79 | Emily SCHOFIELD | 15 | | Stokesley | 4:49.90 |
| 4 | 81 | Holly HARRISON | 14 | | Co Leeds | 4:49.00 |
| 5 | 80 | Elizabeth DIXON | 15 | | Co Leeds | 4:49.85 |
| 6 | 78 | Charlotte HINDE | 16 | | RichmondDale | 4:52.84 |
| 7 | 76 | Mia TRAVIS-JONES | 14 | | Co Leeds | 4:53.21 |
| 8 | 74 | Darcey BLACKER | 16 | | Co Leeds | 4:55.18 |
| 9 | 72 | Grace O'HARA | 12 | | Co Leeds | 4:58.50 |
| Heat Number - 9 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 83 | Rosie BROGDEN | 12 | | Co Leeds | 4:48.20 |
| 1 | 85 | Ava CONNELL | 15 | | Co Leeds | 4:45.60 |
| 2 | 87 | V PINERA LEVITA | 15 | | Co Leeds | 4:40.30 |
| 3 | 89 | Mei YUASA | 14 | | Co Leeds | 4:32.90 |
| 4 | 91 | Millie WELLS | 17 | | ECSMSHPM | 4:31.22 |
| 5 | 90 | Millie THRELFALL | 15 | | Co Leeds | 4:31.73 |
| 6 | 88 | Isabelle HALL | 13 | | Co Leeds | 4:35.10 |
| 7 | 86 | Isabel HANDLEY | 15 | | Co Leeds | 4:41.55 |
| 8 | 84 | Scarlett CAPALDI | 14 | | Stokesley | 4:48.20 |
| 9 | 82 | Emily ENGLAND-HALL | 12 | | Co Leeds | 4:48.30 |