EVENT 301 Female 10 Yrs/Over 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Amy BARKER | 11 | Lincoln Vulc | 6:29.46 |
| 2 | 3 | Miley RICHARDSON | 11 | Co Lincoln P | 6:04.94 |
| 3 | 5 | Evie NEWMAN | 12 | Lincoln Vulc | 5:51.68 |
| 4 | 7 | Annie WEBSTER | 12 | Grantham | 5:50.79 |
| 5 | 6 | Freya SHARPE | 12 | Lincoln Vulc | 5:51.49 |
| 6 | 4 | Florence HENDERSON | 11 | Lincoln Vulc | 5:52.23 |
| 7 | 2 | Lucy BARRATT | 11 | Gainsborough | 6:08.85 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 9 | Remi BERRY | 12 | Co Lincoln P | 5:35.71 |
| 2 | 11 | Suzanna BURKE | 13 | Louth | 5:31.24 |
| 3 | 13 | Amy TAYLOR | 13 | Grantham | 5:25.95 |
| 4 | 16 | Erin NORTON | 14 | Boston | 5:20.80 |
| 5 | 14 | Isla SCOTT | 14 | Lincoln Vulc | 5:24.64 |
| 6 | 12 | Ellena HOWITT | 13 | Grantham | 5:28.83 |
| 7 | 10 | Sophie FOSTER | 13 | Louth | 5:32.84 |
| 8 | 8 | Annabelle JAY | 13 | Grantham | 5:36.60 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 18 | Lucy WILLATTS | 13 | Grantham | 5:11.35 |
| 2 | 20 | Megan LAMB | 15 | Lincoln Vulc | 5:09.86 |
| 3 | 22 | Charlotte JENKINSON | 14 | Deepings | 5:08.32 |
| 4 | 25 | Alice-Mae DOWNS | 15 | Co Lincoln P | 5:06.22 |
| 5 | 24 | Skye HOLMES | 14 | Louth | 5:07.90 |
| 6 | 21 | Sophie WARD | 15 | Grantham | 5:08.33 |
| 7 | 19 | Emily BRIGGS | 15 | South Lincs | 5:10.51 |
| 8 | 17 | Jessica - Rose DAVISON | 15 | Grantham | 5:11.63 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 27 | Sophie COOKSEY | 14 | Louth | 5:04.14 |
| 2 | 29 | Amy PALMER | 13 | Co Lincoln P | 5:02.90 |
| 3 | 31 | Lexie HAMILTON | 15 | South Lincs | 5:01.17 |
| 4 | 33 | Isabelle MCCORKELL | 16 | Gainsborough | 5:00.45 |
| 5 | 32 | Maisie MATTHEWS | 13 | Louth | 5:01.15 |
| 6 | 30 | Maddison HODGIN | 14 | Co Lincoln P | 5:02.18 |
| 7 | 28 | Jessica HERRIOTT | 16 | South Lincs | 5:03.20 |
| 8 | 26 | Elysia SMITH | 14 | Louth | 5:05.68 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 35 | Isla GRAY | 14 | Grantham | 4:56.12 |
| 2 | 37 | Katie MALONEY | 27 | Louth | 4:50.88 |
| 3 | 39 | Emily TALKES | 12 | Lincoln Vulc | 4:46.57 |
| 4 | 41 | Lillie HAMILTON | 16 | South Lincs | 4:45.62 |
| 5 | 40 | Elena ALDENHOFF-KELLY | 16 | Grantham | 4:45.70 |
| 6 | 38 | Ellie PARKES | 18 | Co Lincoln P | 4:50.12 |
| 7 | 36 | Erin INGHAM | 16 | Louth | 4:53.06 |
| 8 | 34 | Zara DIXON | 16 | Co Lincoln P | 4:59.35 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 43 | Olivia ANSTEY | 16 | Louth | 4:44.09 |
| 2 | 45 | Francesca HALLAM-STOTT | 17 | Grantham | 4:38.67 |
| 3 | 47 | Hannah BRUCE | 15 | South Lincs | 4:35.39 |
| 4 | 49 | Alexandra BULAT | 18 | Co Lincoln P | 4:30.50 |
| 5 | 48 | Jessica O'HERLIHY | 18 | South Lincs | 4:33.50 |
| 6 | 46 | Grace TURNER | 17 | Grantham | 4:36.12 |
| 7 | 44 | Grace MACDONALD | 15 | Grantham | 4:40.47 |
| 8 | 42 | Charlotte HODGIN | 16 | Co Lincoln P | 4:44.89 |