EVENT 501 Girls 11/13 Yrs 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 3 | 1 | Hannah Edwards | 12 | Nova Cent'n | 6:00.17 |
| 4 | 2 | Annabel Russell | 12 | Co Leicester | 5:56.45 |
| 5 | 3 | Holly Marshall | 12 | Lincoln Vulc | 5:55.03 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 4 | Rose Dickerson | 12 | Nova Cent'n | 5:51.80 |
| 2 | 5 | Evie Johnson | 11 | Nova Cent'n | 5:51.38 |
| 3 | 6 | Alexia Kowal | 12 | Co Leicester | 5:50.56 |
| 4 | 7 | Ellie Loades | 12 | Nova Cent'n | 5:46.67 |
| 5 | 8 | Evie Woolley | 12 | Northampton | 5:46.58 |
| 6 | 9 | Mollie Briggs | 13 | South Lincs | 5:46.00 |
| 7 | 10 | Tegan Harrison | 13 | Boston | 5:45.50 |
| 8 | 11 | Hannah Willis | 13 | South Lincs | 5:44.86 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 12 | Molly Denton | 13 | Leic Sharks | 5:43.01 |
| 2 | 13 | Keira Dobbs | 13 | Nova Cent'n | 5:42.11 |
| 3 | 14 | Chloe Daybell | 13 | Grantham | 5:41.89 |
| 4 | 15 | Elizabeth Burt | 12 | Boston | 5:41.66 |
| 5 | 16 | Lily Jackson-Oates | 13 | Nova Cent'n | 5:41.26 |
| 6 | 17 | Emily Morris | 13 | Nova Cent'n | 5:40.40 |
| 7 | 18 | Eja Coe | 12 | Derventio | 5:38.60 |
| 8 | 19 | Sophie Busby | 12 | Derventio | 5:36.54 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 20 | Ziyenne Shanker | 13 | Nova Cent'n | 5:36.00 |
| 2 | 21 | Heidi Marriott | 13 | Nova Cent'n | 5:35.87 |
| 3 | 22 | Hayley Mair | 13 | Co Leicester | 5:35.78 |
| 4 | 23 | Lucy Hitchin | 13 | Co Leicester | 5:31.91 |
| 5 | 24 | Poppy Hogg | 13 | Northampton | 5:30.80 |
| 6 | 25 | Jessica Owen | 13 | Co Leicester | 5:27.80 |
| 7 | 26 | Becky Whittaker | 13 | Nova Cent'n | 5:26.49 |
| 8 | 27 | Honey Baxendale | 13 | Nova Cent'n | 5:25.96 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 29 | Poppy Mead | 13 | Derventio | 5:23.11 |
| 2 | 31 | Bobbi Harper | 13 | Northampton | 5:16.97 |
| 3 | 33 | Livia Kingsland | 13 | Nova Cent'n | 5:09.90 |
| 4 | 35 | Amber Downham | 13 | Chesterfield | 5:06.49 |
| 5 | 34 | Isabella Hobson-Corbet | 13 | Bassetlaw SS | 5:06.76 |
| 6 | 32 | Kate Morris | 13 | Nova Cent'n | 5:11.04 |
| 7 | 30 | Leah Burgin-Rawson | 13 | Derventio | 5:19.79 |
| 8 | 28 | Iona Colbert | 13 | Grantham | 5:25.40 |