EVENT 301 Girls Open 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Evie WOODS | 10 | Co Leeds | 8:23.31 |
| 4 | 3 | Harriet DALLIMORE | 11 | Co Leeds | 7:58.00 |
| 5 | 2 | Holly HARRISON | 9 | Co Leeds | 8:14.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 5 | Isabel HANDLEY | 10 | Co Leeds | 7:37.39 |
| 2 | 7 | Maggie TRAN | 12 | Tadcaster | 7:00.00 |
| 3 | 9 | Hannah SENIOR | 11 | Rotherham Mo | 6:51.00 |
| 4 | 11 | Caitlyn SMITH | 10 | Co Leeds | 6:45.70 |
| 5 | 10 | Esme HAYS | 11 | Co Wakefield | 6:50.00 |
| 6 | 8 | Millie WALKER | 10 | Co Leeds | 6:55.00 |
| 7 | 6 | Freya COTTERILL | 10 | Co Leeds | 7:28.44 |
| 8 | 4 | Gracie HINDE | 9 | Rotherham Mo | 7:50.00 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 13 | Libby HILL | 13 | Chapeltown | 6:17.69 |
| 1 | 15 | Kaitlyn CROSBY | 12 | Stretford | 6:09.90 |
| 2 | 17 | Samantha KNOWLES | 11 | Co Leeds | 6:04.10 |
| 3 | 19 | Tabitha BROWNING | 14 | Tadcaster | 6:00.54 |
| 4 | 21 | Lauren LILLEY | 11 | Co Leeds | 5:43.00 |
| 5 | 20 | Christina BLACK | 12 | Co Leeds | 5:54.50 |
| 6 | 18 | Charlotte SHAW | 11 | Co Leeds | 6:03.30 |
| 7 | 16 | Valeria PINERA-LEVITA | 10 | Co Leeds | 6:04.80 |
| 8 | 14 | Charlotte HOLMES | 17 | Tadcaster | 6:12.18 |
| 9 | 12 | Matilda ASHCROFT | 11 | Co Leeds | 6:20.40 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 23 | Macy YOXALL | 14 | Bo Barnsley | 5:36.90 |
| 1 | 25 | Daisy GUTTRIDGE | 14 | Donc Dartes | 5:30.25 |
| 2 | 27 | Daisy PURCHASE | 13 | Donc Dartes | 5:24.80 |
| 3 | 29 | Hannah NEWNHAM | 16 | Donc Dartes | 5:13.80 |
| 4 | 31 | Abigail JACKSON | 16 | Rotherham Mo | 5:07.40 |
| 5 | 30 | Mollie FISHER | 14 | Rotherham Mo | 5:12.34 |
| 6 | 28 | Mia ELLIS | 14 | Grantham | 5:24.50 |
| 7 | 26 | Jess WIDDOWSON | 13 | Co Leeds | 5:27.86 |
| 8 | 24 | India BRYANT CHESTERS | 13 | Tadcaster | 5:33.10 |
| 9 | 22 | Sedona REED | 12 | Co Leeds | 5:39.70 |