EVENT 101 Girl Open 1500m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 1 | Laura TEMPLE | 13 | Co Bradford | 21:24.28 |
| 3 | 3 | Pollyanna KERSHAW | 12 | Blackpool Aq | 20:29.48 |
| 4 | 5 | Isabelle ELLIS | 16 | RichmondDale | 20:21.52 |
| 5 | 4 | Mei YUASA | 12 | Co Leeds | 20:25.96 |
| 6 | 2 | Mia TRAVIS-JONES | 12 | Co Leeds | 21:20.22 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 7 | Annabel VANCE | 15 | Northampton | 20:13.53 |
| 1 | 9 | Siena OXBY | 15 | Stockport Mo | 20:03.40 |
| 2 | 11 | Mischa COMRIE | 15 | Co Leeds | 19:58.07 |
| 3 | 13 | Alex NEWTON | 14 | Co Leeds | 19:47.71 |
| 4 | 15 | Elizabeth DIXON | 13 | Co Leeds | 19:19.19 |
| 5 | 14 | Macy BARKER | 15 | Warrington W | 19:33.70 |
| 6 | 12 | Hazel BLAIN | 13 | Co Leeds | 19:49.76 |
| 7 | 10 | Matilda POTTER | 14 | Co Leeds | 20:00.15 |
| 8 | 8 | Lillie HAMILTON | 14 | South Lincs | 20:12.10 |
| 9 | 6 | Mia ASCROFT | 17 | Leyland Barr | 20:21.07 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 17 | Freya CARNELL | 15 | Satellite | 19:17.79 |
| 1 | 19 | Annalise MENDOZA | 14 | KingstonHull | 19:12.88 |
| 2 | 21 | Daisy GUTTRIDGE | 17 | Rotherham Mo | 19:11.60 |
| 3 | 24 | Emilia CIESZCZYK | 15 | Northampton | 18:56.24 |
| 4 | 26 | Mollie BRIGGS | 17 | South Lincs | 18:45.10 |
| 5 | 25 | Charlotte MORETON | 14 | Co Leeds | 18:51.19 |
| 6 | 22 | Greta HIGHFIELD | 14 | Donc Dartes | 19:06.61 |
| 7 | 20 | Cazia MARTIN | 13 | Donc Dartes | 19:12.84 |
| 8 | 18 | Olivia WATTS | 13 | Warrington W | 19:13.90 |
| 9 | 16 | Amelia GERRARD | 13 | Warrington W | 19:18.40 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 28 | Emily Afiya RICKINSON | 16 | KingstonHull | 18:37.90 |
| 1 | 30 | Rhianna FOSTER | 16 | KingstonHull | 18:30.02 |
| 2 | 32 | Millie WELLS | 15 | Ellesmere Co | 18:26.40 |
| 3 | 34 | Evie BARBER | 18 | Royal Wolv | 18:16.41 |
| 4 | 36 | Megan SHARP | 16 | Co Leeds | 18:00.90 |
| 5 | 35 | Ruby KNIGHT | 16 | Bo Kirklees | 18:12.70 |
| 6 | 33 | Kerry HENNIE | 14 | Warrington W | 18:21.40 |
| 7 | 31 | Payton CHESTERS | 14 | Warrington W | 18:27.10 |
| 8 | 29 | Lauren LILLEY | 14 | Co Leeds | 18:32.90 |
| 9 | 27 | Jessica REILLY | 16 | Harrogate | 18:38.57 |