EVENT 301 Female 10 Yrs/Over 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Eliza GREENSLADE | 11 | Middlesboro | 5:57.74 |
| 2 | 3 | Alissa FAWCETT | 12 | Middlesboro | 5:39.48 |
| 3 | 5 | Sophia TOWARD | 11 | Tynemouth | 5:36.30 |
| 4 | 7 | Alexandra Yi Xuan LAW | 11 | Middlesboro | 5:35.00 |
| 5 | 6 | Georgia ALEXANDER | 11 | Co Sund'land | 5:35.60 |
| 6 | 4 | Jemima HUNT | 11 | Co Sund'land | 5:39.20 |
| 7 | 2 | Sienna MOORE | 10 | South Tyne | 5:41.52 |
| 8 | 40 | Iona MURRAY | 16 | Newcastle | 4:.4.5. |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 9 | Louise ROSTRON | 12 | South Tyne | 5:21.44 |
| 2 | 11 | Emilia WAKENSHAW | 12 | Tynemouth | 5:16.30 |
| 3 | 13 | Roxie CLARENCE | 13 | Derwent&Gate | 5:13.24 |
| 4 | 15 | Florence BURNS | 13 | South Tyne | 5:10.00 |
| 5 | 14 | Penny JOYCE | 13 | Tynemouth | 5:11.85 |
| 6 | 12 | Emily MAINS | 14 | Guisborough | 5:13.69 |
| 7 | 10 | Emilia BONHAM | 12 | Guisborough | 5:17.82 |
| 8 | 8 | Sophie BELL | 12 | Tynemouth | 5:31.76 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 17 | Isla NISBET | 14 | Morpeth | 5:08.44 |
| 2 | 19 | Tia JOHNSON | 14 | Newcastle | 5:05.60 |
| 3 | 21 | Darcie CROSBY | 14 | Guisborough | 5:04.40 |
| 4 | 23 | Kate TUCKETT | 14 | Newcastle | 5:01.61 |
| 5 | 22 | Erin STEPHENSON-MANGAN | 20 | Eston | 5:02.14 |
| 6 | 20 | Sophia MALLEY | 12 | Co Sund'land | 5:04.90 |
| 7 | 18 | Phoebe REID | 12 | South Tyne | 5:08.19 |
| 8 | 16 | Robyn POLLOCK | 13 | Middlesboro | 5:08.80 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 25 | Amia STONEHOUSE | 13 | Co Sund'land | 5:00.50 |
| 2 | 27 | Rosie BAYLISS | 15 | Guisborough | 4:57.73 |
| 3 | 29 | Molly MILNER | 14 | Tynemouth | 4:52.97 |
| 4 | 31 | Alice SCACCO | 13 | Middlesboro | 4:50.71 |
| 5 | 30 | Poppy AYRE | 14 | Middlesboro | 4:52.35 |
| 6 | 28 | Ava GLYNN | 16 | Newcastle | 4:54.96 |
| 7 | 26 | Evie BINT | 12 | Guisborough | 4:57.74 |
| 8 | 24 | Amelia THORPE | 13 | Tynemouth | 5:01.05 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 33 | Macey BOWE | 14 | South Tyne | 4:43.31 |
| 2 | 35 | Jennifer SMITH | 16 | Middlesboro | 4:35.70 |
| 3 | 37 | Lucy RAPER | 15 | Newcastle | 4:31.00 |
| 4 | 39 | Lydia SHIPLEY | 15 | Middlesboro | 4:16.60 |
| 5 | 38 | Evelyn HALLISSEY | 17 | Newcastle | 4:24.40 |
| 6 | 36 | Abby COVENTRY | 15 | Newcastle | 4:31.60 |
| 7 | 34 | Freya MONKS | 15 | South Tyne | 4:43.06 |
| 8 | 32 | Addison ALEXANDER | 13 | Co Sund'land | 4:44.30 |