EVENT 701 Girls Open 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 2 | Felicity HOGGARD | 12 | Melton M'bry | 5:52.43 |
| 3 | 4 | Jessica PURSER | 12 | Hinckley | 5:47.30 |
| 4 | 6 | Marta UCIECHA | 13 | Leicester Ne | 5:42.71 |
| 5 | 5 | Olivia BEVAN | 12 | Hinckley | 5:43.59 |
| 6 | 3 | Olivia FAUSTMANN | 12 | Leic Sharks | 5:50.20 |
| 7 | 1 | Jasmeen SINGH | 12 | Hinckley | 6:02.01 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 8 | Megan BLAIR | 12 | Coalville | 5:39.31 |
| 2 | 10 | Erika CLARKE | 12 | Hinckley | 5:37.09 |
| 3 | 12 | Elizabeth BAINES | 13 | Hinckley | 5:28.08 |
| 4 | 15 | Luan POWER | 14 | Hinckley | 5:22.69 |
| 5 | 14 | Isabelle WALCZAK | 15 | Leic Peng | 5:26.00 |
| 6 | 11 | Bethany HENSON | 13 | Coalville | 5:28.91 |
| 7 | 9 | Catherine YATES | 13 | Loughborough | 5:38.78 |
| 8 | 7 | Peta MORLEY | 12 | Hinckley | 5:42.53 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 17 | Emma GRAHAM-BROWN | 14 | Leic Peng | 5:22.20 |
| 2 | 19 | Ava STEANS | 13 | Hinckley | 5:21.20 |
| 3 | 21 | Evie BEVAN | 14 | Hinckley | 5:16.14 |
| 4 | 23 | Molly ROBERTS | 19 | Leicester Ne | 5:13.31 |
| 5 | 22 | Eloise ALLSAGER | 16 | Melton M'bry | 5:13.85 |
| 6 | 20 | Jessica SMITH | 17 | Loughborough | 5:16.44 |
| 7 | 18 | Isabelle ROSE | 14 | Braunstone | 5:21.61 |
| 8 | 16 | Holly GENT | 12 | Coalville | 5:22.31 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 25 | Lily BARKER | 20 | Leic Sharks | 5:04.65 |
| 2 | 28 | Isobel SYKES | 18 | Braunstone | 5:02.20 |
| 3 | 30 | Sarah DEW | 16 | OadbyWigston | 5:00.94 |
| 4 | 32 | Francesca HARRISON | 14 | Braunstone | 4:59.47 |
| 5 | 31 | Sophie STATHAM-GILL | 14 | Coalville | 5:00.58 |
| 6 | 29 | Eleanor TAYLOR | 18 | Loughborough | 5:02.05 |
| 7 | 26 | Freya WINGFIELD-DOBBS | 17 | Leicester Ne | 5:04.51 |
| 8 | 24 | Eleanor TRAHEARN | 14 | Hinckley | 5:09.03 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 35 | Amelie BIRKETT | 16 | Hinckley | 4:54.75 |
| 2 | 37 | Maisie SIMPSON | 13 | Braunstone | 4:52.96 |
| 3 | 39 | Jessica OXLEY | 14 | Braunstone | 4:49.34 |
| 4 | 41 | Annabel RUSSELL | 17 | Coalville | 4:41.68 |
| 5 | 40 | Poppy SCOTCHBROOK | 16 | Braunstone | 4:47.43 |
| 6 | 38 | Elizabeth PALFREY | 15 | Loughborough | 4:50.59 |
| 7 | 36 | Janie FINCH | 13 | Hinckley | 4:53.00 |
| 8 | 34 | Francesca PALFREY | 17 | Loughborough | 4:55.59 |