EVENT 306 Boy/Girl 09 Yrs/Over 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 1 | Isla Richards | 11 | Retford | 7:33.38 |
| 3 | 3 | Amy Kirkby | 10 | Retford | 7:10.00 |
| 4 | 2 | Jayden Cross | 10 | Retford | 7:10.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 4 | Alfie Grounsell | 10 | Retford | 6:20.12 |
| 2 | 6 | Emily Goodacre | 11 | Retford | 6:20.00 |
| 3 | 8 | Mia Richards | 14 | Retford | 6:04.76 |
| 4 | 7 | George Woodhead | 10 | Retford | 6:20.00 |
| 5 | 5 | Summer Woodcock | 9 | Retford | 6:20.00 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 10 | Lily Pashley | 12 | Retford | 5:32.70 |
| 2 | 12 | Starla Hope | 13 | Retford | 5:18.06 |
| 3 | 14 | Isobelle Rafferty | 12 | Retford | 5:01.59 |
| 4 | 13 | Iona Watson | 14 | Retford | 5:08.33 |
| 5 | 11 | Charlotte Alcock | 16 | Retford | 5:28.00 |
| 6 | 9 | Isla-Rose Wildish | 9 | Retford | 5:52.64 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 16 | Owen Rafferty | 15 | Retford | 4:48.76 |
| 2 | 18 | Jennifer Walker | 15 | Retford | 4:33.59 |
| 3 | 20 | Callum Kettlewell | 19 | Retford | 4:15.70 |
| 4 | 19 | Layne Keyworth | 15 | Retford | 4:16.60 |
| 5 | 17 | Reuben Meadows | 13 | Retford | 4:44.00 |
| 6 | 15 | Evie Lilley | 14 | Retford | 4:52.06 |