EVENT 207 Mixed 10 Yrs/Over 1500m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Bronte Easey | 13 | Bassetlaw SS | 19:44.31 |
| 4 | 3 | Tate Fox | 14 | Bassetlaw SS | 19:25.73 |
| 5 | 2 | Ellie Poulton-Burbank | 14 | Co Leicester | 19:32.38 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 5 | Oscar Venn | 13 | Northampton | 19:19.20 |
| 3 | 7 | Eloise Allsager | 18 | Leic Peng | 19:11.37 |
| 4 | 9 | Oliver Shepherd | 16 | Deepings | 18:40.60 |
| 5 | 8 | Isobelle Rafferty | 14 | Bassetlaw SS | 18:59.34 |
| 6 | 6 | Iona Watson | 16 | Bassetlaw SS | 19:11.49 |
| 7 | 4 | Vida Coulson | 12 | Northampton | 19:22.60 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 11 | Nicola Michalska | 14 | Co Leicester | 18:31.95 |
| 2 | 13 | Grace Grindrod | 17 | Northampton | 18:03.63 |
| 3 | 15 | William Kite | 16 | Louth | 17:55.60 |
| 4 | 17 | Lana Webb | 16 | Northampton | 17:33.60 |
| 5 | 16 | Riley Woodward | 16 | Northampton | 17:43.10 |
| 6 | 14 | Harper Aspinall | 13 | Wirral Metro | 17:59.20 |
| 7 | 12 | Elkie Foster | 14 | Co Leeds | 18:07.20 |
| 8 | 10 | Daisy Tatlow-Turner | 15 | Chesterfield | 18:32.21 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 19 | Phebe Adams | 16 | Northampton | 17:17.80 |
| 2 | 21 | William Oxley | 15 | Co Leicester | 16:43.82 |
| 3 | 23 | Joseph Hall | 17 | Co Leeds | 16:23.40 |
| 4 | 25 | Hector Pardoe | 24 | Lboro Uni | 15:13.13 |
| 5 | 24 | William Wilson | 15 | Co Leeds | 16:04.80 |
| 6 | 22 | Oliver Davies | 16 | Co Leicester | 16:34.70 |
| 7 | 20 | Isabelle Hall | 14 | Co Leeds | 16:54.10 |
| 8 | 18 | Hayden Lam | 15 | Co Leeds | 17:31.10 |