EVENT 721 Womens 11 Yrs/Over 1500m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 3 | 1 | Charlotte Shaw | 12 | Co Peterboro | 20:11.52 |
| 4 | 3 | Alexa Mann | 13 | Basildon Ph | 19:35.92 |
| 5 | 2 | Romilly Marks | 13 | Newmarket | 19:46.70 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 4 | Lisa Leinemann | 12 | Chelmsford | 19:34.35 |
| 2 | 6 | Amelie Crabb | 12 | teamipswich | 19:27.40 |
| 3 | 8 | Lucy Young | 14 | Modernian | 19:00.90 |
| 4 | 10 | Phoebe White | 14 | Harlow Pen | 18:57.31 |
| 5 | 9 | Clara Watson-Flowers | 13 | St Felix Sch | 18:59.80 |
| 6 | 7 | Anastasia Wilkinson | 14 | Hatfield | 19:09.63 |
| 7 | 5 | Olivia Cooper | 13 | Basildon Ph | 19:29.56 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 12 | Georgina Munday | 15 | Modernian | 18:47.10 |
| 2 | 14 | Maeve Pooley | 14 | Newmarket | 18:39.20 |
| 3 | 16 | Bryony Edgings | 14 | Thurrock | 18:35.47 |
| 4 | 18 | Orla Keaveney | 16 | Modernian | 18:27.50 |
| 5 | 17 | Madelyn Latimer-Hicks | 15 | St Felix Sch | 18:33.10 |
| 6 | 15 | Matilda Ransome | 13 | Co Cambridge | 18:38.96 |
| 7 | 13 | Ruby Greenhalf | 14 | Co Norwich | 18:44.30 |
| 8 | 11 | Francesca Baber | 13 | C Beds SS | 18:56.80 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 20 | Charlotte Tree | 15 | Colchester | 18:22.11 |
| 2 | 22 | Tilly Anema | 18 | Co Norwich | 18:18.00 |
| 3 | 24 | Abbie Barnwell | 16 | Team Luton | 18:14.10 |
| 4 | 26 | Freya Wright | 17 | West Suffolk | 18:12.66 |
| 5 | 25 | Holly Lamb | 14 | Southend | 18:13.22 |
| 6 | 23 | Charlotte Norman | 14 | teamipswich | 18:15.64 |
| 7 | 21 | Olivia Lee | 15 | Co Peterboro | 18:19.63 |
| 8 | 19 | Kiara Kovacs | 15 | Co Peterboro | 18:23.25 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 28 | Almudena Visser Velez | 17 | Co Cambridge | 18:00.93 |
| 2 | 30 | Billie Grant | 17 | Hatfield | 17:55.00 |
| 3 | 32 | Chantal Smith | 19 | Team Luton | 17:45.90 |
| 4 | 34 | Celyn Walmsley | 18 | Team Luton | 17:29.20 |
| 5 | 33 | Harriet Salisbury | 15 | Co Peterboro | 17:35.86 |
| 6 | 31 | Katie Hammond | 16 | Co Cambridge | 17:47.00 |
| 7 | 29 | Ella Turner | 14 | Basildon Ph | 17:55.92 |
| 8 | 27 | Erin Little | 14 | Chelmsford | 18:01.14 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 36 | May Bradburn | 15 | Chelmsford | 17:26.27 |
| 2 | 38 | Lily Merrett | 16 | Co St Albans | 17:20.90 |
| 3 | 40 | Rebecca Howell | 16 | Basildon Ph | 17:14.88 |
| 4 | 42 | Mackenzie Whyatt | 17 | Co Peterboro | 17:10.90 |
| 5 | 41 | Abbie Low | 17 | Chelmsford | 17:11.74 |
| 6 | 39 | Tia Wilson | 17 | Modernian | 17:20.10 |
| 7 | 37 | Daisy Hill | 20 | Co Norwich | 17:25.50 |
| 8 | 35 | Ruby Wheeler | 13 | Basildon Ph | 17:27.95 |