EVENT 103 Girl Open 50m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 2 | Isabella STOICESCU | 10 | Co Leeds | 2:00.00 |
| 3 | 4 | Louisa STEVENSON | 11 | Rothwell 8 | 1:42.92 |
| 4 | 6 | Alexa HAIGH | 11 | Rothwell 8 | 1:31.80 |
| 5 | 5 | Lily RAWLINGS | 10 | Rothwell 8 | 1:40.50 |
| 6 | 3 | Emily GILL | 10 | Rothwell 8 | 1:50.82 |
| 7 | 1 | Arya GUNGOR | 12 | Airborough 8 | |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 8 | Maya POGOREANU | 10 | Co Leeds NR | 1:30.00 |
| 1 | 10 | Isabella GALE | 11 | John Smeaton | 1:25.00 |
| 2 | 12 | Isabelle GRAYSON | 11 | Scott Hall 8 | 1:18.21 |
| 3 | 14 | Ellie MORAN | 10 | John Smeaton | 1:15.00 |
| 4 | 16 | Bethany PRESSLING | 11 | John Smeaton | 1:10.00 |
| 5 | 15 | Ava TRAVIS-JONES | 9 | Co Leeds | 1:11.14 |
| 6 | 13 | Fay GALLOWAY | 10 | Morley 8 | 1:17.94 |
| 7 | 11 | POPPY CHRISTIE | 10 | Scott Hall 8 | 1:20.81 |
| 8 | 9 | Niamh BEANLAND | 10 | Rothwell 8 | 1:29.45 |
| 9 | 7 | Kate RICHARDSON | 10 | Co Leeds NR | 1:30.00 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 18 | Evie COOK | 9 | Scott Hall 8 | 1:07.11 |
| 1 | 20 | Sophia GRAVILLE | 11 | Scott Hall 8 | 1:03.57 |
| 2 | 22 | Layla MCHALE | 11 | Co Leeds | 1:00.90 |
| 3 | 24 | Milla AYRES-PRESTWICH | 10 | Scott Hall 8 | 1:00.45 |
| 4 | 26 | Alice HOLT | 11 | Wetherby 8 | 58.51 |
| 5 | 25 | Amelia DAVIES | 11 | Scott Hall 8 | 1:00.21 |
| 6 | 23 | Hanna PLUDOWSKA | 12 | Scott Hall 8 | 1:00.51 |
| 7 | 21 | Olivia OLCHOWIK | 12 | JCCS 8 | 1:01.72 |
| 8 | 19 | Mollie CULLUM | 10 | John Smeaton | 1:04.71 |
| 9 | 17 | Anna TYLER | 12 | Scott Hall 8 | 1:07.15 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 28 | Charlotte HAMPSON | 12 | JCCS 8 | 57.00 |
| 1 | 30 | Jessie LARKIN | 11 | Morley 8 | 56.64 |
| 2 | 32 | Ruth FRIEND | 12 | Scott Hall 8 | 54.58 |
| 3 | 34 | Florence HITCHENOR | 11 | Co Leeds | 53.50 |
| 4 | 36 | Evie MONKS | 12 | Airborough 8 | 52.91 |
| 5 | 35 | Evie WALLACE | 11 | Scott Hall 8 | 53.37 |
| 6 | 33 | Elizabeth NUTTER | 10 | Co Leeds | 54.10 |
| 7 | 31 | Annabelle MATTHEWS | 12 | Kirkstall 8 | 55.06 |
| 8 | 29 | Imogen HARSLEY | 11 | Co Leeds | 56.78 |
| 9 | 27 | Eve CLARKE | 11 | Wetherby 8 | 58.50 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 38 | Hannah BROWN | 12 | Co Leeds | 50.82 |
| 1 | 40 | Mollie SHARP | 12 | JCCS 8 | 49.98 |
| 2 | 42 | Evie-Rose TOPPING | 11 | Co Leeds | 48.80 |
| 3 | 44 | Jessica MCVICAR | 12 | Airborough 8 | 47.74 |
| 4 | 46 | Maisie RAY | 12 | Pudsey 8 | 46.00 |
| 5 | 45 | Emily JONES | 12 | Scott Hall 8 | 46.14 |
| 6 | 43 | Olivia WELLS | 11 | Co Leeds | 48.65 |
| 7 | 41 | Alice BROWNIE | 13 | Scott Hall 8 | 49.05 |
| 8 | 39 | Thalia AL-SAJIR | 12 | Scott Hall 8 | 50.17 |
| 9 | 37 | Raya PRODANOVA | 12 | Co Leeds | 52.71 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 48 | Olivia WINTER | 11 | Co Leeds | 45.03 |
| 1 | 50 | Annabel GALBRAITH | 12 | Co Leeds | 43.32 |
| 2 | 52 | Isabelle HUSSEY | 13 | Scott Hall 8 | 42.98 |
| 3 | 54 | Elspeth KNOWLES | 12 | Co Leeds | 41.52 |
| 4 | 56 | Lucy WAINWRIGHT | 12 | Co Leeds | 38.59 |
| 5 | 55 | Kate COOK | 13 | Scott Hall 8 | 40.64 |
| 6 | 53 | Matilda BRAITHWAITE | 12 | Co Leeds | 42.20 |
| 7 | 51 | Daisy BRANNEN | 12 | Co Leeds | 43.12 |
| 8 | 49 | Megan TURVEY | 13 | Scott Hall 8 | 44.77 |
| 9 | 47 | Isabella JUSTHAM | 12 | Co Leeds | 45.66 |