EVENT 102 Boys 10 Yrs/Over 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | William Proud | 11 | Middlesboro | 6:50.27 |
| 4 | 3 | Stephen Gittins | 11 | Stokesley | 6:20.00 |
| 5 | 2 | Ted Smith | 10 | Middlesboro | 6:45.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 4 | Daniel Mansell | 13 | Billingham | 6:08.20 |
| 2 | 6 | Jake Atha | 12 | Harrogate | 5:58.00 |
| 3 | 8 | Will Hewitt | 13 | Billingham | 5:49.81 |
| 4 | 10 | Lewis Taylor | 15 | Eston | 5:41.03 |
| 5 | 9 | Jacob Nixon | 12 | Middlesboro | 5:44.01 |
| 6 | 7 | Jacob Redding | 12 | Middlesboro | 5:54.00 |
| 7 | 5 | Finn Orr | 11 | Alnwick Dol | 6:05.39 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 12 | Ethan Reddivari | 11 | Middlesboro | 5:33.96 |
| 2 | 14 | P Stephenson-Mangan | 14 | Eston | 5:11.16 |
| 3 | 16 | Ryan Mills | 15 | Middlesboro | 4:58.53 |
| 4 | 18 | Stuart Hood | 14 | Guisborough | 4:55.37 |
| 5 | 17 | William Lawson | 14 | Billingham | 4:57.22 |
| 6 | 15 | Ruaridh Batley | 14 | Alnwick Dol | 4:59.70 |
| 7 | 13 | Marcu Ghetu | 14 | Harrogate | 5:20.30 |
| 8 | 11 | Daniel Roberts | 12 | Billingham | 5:37.22 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 20 | Freddie Fenwick | 16 | Team Jorvik | 4:53.26 |
| 2 | 22 | Aiden Colmer | 15 | Middlesboro | 4:44.70 |
| 3 | 24 | Alex Boyer | 15 | Sedgefield | 4:27.60 |
| 4 | 26 | Finn Ripley | 15 | Middlesboro | 4:15.42 |
| 5 | 25 | Toma Saha | 17 | Middlesboro | 4:24.26 |
| 6 | 23 | Michael Hewitt | 17 | AFSHartlepol | 4:36.25 |
| 7 | 21 | Robert Shipley | 12 | Middlesboro | 4:47.13 |
| 8 | 19 | Joshua Young | 15 | Middlesboro | 4:55.30 |