EVENT 101 Mixed 1500m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 2 | JENNIFER SMITH | 16 | Middlesboro | 18:12.60 |
| 3 | 4 | EMILY FORSTER | 15 | Co Sund'land | 17:29.83 |
| 4 | 6 | JACK WATERSON | 15 | Co Sund'land | 17:02.00 |
| 5 | 5 | OLIVER BARRETT | 15 | Harrogate | 17:25.80 |
| 6 | 3 | JESSICA HUBERY | 16 | Rotherham Mo | 17:47.70 |
| 7 | 1 | LILY CATTLIN | 16 | Rotherham Mo | 18:12.90 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 8 | MICHAEL O'NEILL | 17 | Bo Stockton | 16:39.43 |
| 1 | 10 | TOM HOLT | 15 | Co Sund'land | 16:30.00 |
| 2 | 12 | ARCHIE MCGUIRE | 15 | Co Sund'land | 16:25.50 |
| 3 | 14 | SAM WRIGHT | 18 | Tadcaster | 16:07.04 |
| 4 | 16 | AIDAN TURNER | 17 | Newcastle | 15:25.28 |
| 5 | 15 | OSCAR GAVELLE | 17 | Co Sheffield | 15:47.60 |
| 6 | 13 | OWEN BROWN | 17 | Newcastle | 16:20.60 |
| 7 | 11 | PATRICK O'HARA | 16 | Co Leeds | 16:26.10 |
| 8 | 9 | AVA COOK | 18 | Co Sheffield | 16:33.45 |
| 9 | 7 | JEFFREY LANGE | 15 | Co Leeds | 16:45.10 |