EVENT 108 Mixed 800m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 2 | Isabelle PARK | 10 | Co Leeds | 13:00.00 |
| 1 | 4 | Zoe FEATHER | 10 | Co Leeds | 12:45.00 |
| 2 | 6 | Amy COWLISHAW | 14 | Stocksbridge | 12:30.50 |
| 3 | 8 | Oliver ATHA | 12 | Co Leeds | 12:30.00 |
| 4 | 10 | Euan CARMODY | 10 | Co Leeds | 12:30.00 |
| 5 | 9 | Callum FOZARD | 12 | Co Leeds | 12:30.00 |
| 6 | 7 | Robson HART | 10 | Co Leeds | 12:30.00 |
| 7 | 5 | Isabella STOICESCU | 11 | Co Leeds | 12:40.00 |
| 8 | 3 | Willow WRIGHT | 10 | Co Leeds | 12:45.00 |
| 9 | 1 | Hogan LAM | 12 | Co Leeds | 13:13.03 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 12 | Tomas BICKERS | 11 | Co Leeds | 12:30.00 |
| 1 | 14 | Oliver BARKER | 10 | Co Leeds | 12:30.00 |
| 2 | 16 | Emily ENGLAND-HALL | 11 | Co Leeds | 12:30.00 |
| 3 | 18 | Eva SYLVESTER | 11 | Co Leeds | 12:27.00 |
| 4 | 20 | Freya ELLIS | 11 | Co Leeds | 12:06.15 |
| 5 | 19 | Elizabeth BOND | 11 | Co Leeds | 12:24.81 |
| 6 | 17 | Amelie COTTERILL | 11 | Co Leeds | 12:28.97 |
| 7 | 15 | Ellis HARGREAVES | 11 | Co Leeds | 12:30.00 |
| 8 | 13 | Rosie BROGDEN | 11 | Co Leeds | 12:30.00 |
| 9 | 11 | Jacob JONES | 11 | Co Leeds | 12:30.00 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 22 | William LANCASHIRE | 13 | Co Leeds | 12:00.00 |
| 1 | 24 | George KING | 11 | Co Leeds | 12:00.00 |
| 2 | 26 | Livia STACEY | 12 | Co Leeds | 12:00.00 |
| 3 | 28 | Erin BENTLEY | 12 | Co Leeds | 12:00.00 |
| 4 | 30 | Isabelle KING | 14 | Co Leeds | 11:46.70 |
| 5 | 29 | Olaf GRUDOWSKI | 12 | Co Leeds | 12:00.00 |
| 6 | 27 | Amelia MATSON | 11 | Co Leeds | 12:00.00 |
| 7 | 25 | Taya WINGFIELD | 12 | Co Leeds | 12:00.00 |
| 8 | 23 | Oscar HUSSEY | 11 | Co Leeds | 12:00.00 |
| 9 | 21 | Addison CROPPER | 10 | Co Leeds | 12:00.00 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 32 | Emily MARRISON | 13 | Co Leeds | 11:27.77 |
| 1 | 34 | Finn ORR | 12 | Alnwick Dol | 11:00.60 |
| 2 | 36 | Ursula CARROLL | 11 | Stocksbridge | 10:46.50 |
| 3 | 38 | Millie HERBERT | 13 | Bo Barnsley | 10:44.10 |
| 4 | 40 | Amit MALTZ | 13 | Co Leeds | 10:40.90 |
| 5 | 39 | Evie-Rose TOPPING | 12 | Co Leeds | 10:42.67 |
| 6 | 37 | Ella MCDERMOTT | 15 | Co Leeds | 10:44.32 |
| 7 | 35 | Reuben HARRISON | 13 | Co Leeds | 10:55.40 |
| 8 | 33 | Jeffrey LANGE | 12 | Co Leeds | 11:15.00 |
| 9 | 31 | Leo LI | 11 | Co Leeds | 11:30.00 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 42 | Ethan COWELL | 14 | Co Leeds | 10:30.00 |
| 1 | 44 | Isabelle HALL | 12 | Co Leeds | 10:12.10 |
| 2 | 46 | Mateo MARINOV | 14 | Stocksbridge | 9:50.50 |
| 3 | 48 | Zachary FIDAN | 13 | Teddington | 9:40.50 |
| 4 | 50 | Matthew JAMES | 15 | Co Leeds | 9:19.01 |
| 5 | 49 | Luke DYER | 16 | Co Leeds | 9:20.10 |
| 6 | 47 | Oliver INGHAM | 15 | Co Salford | 9:43.90 |
| 7 | 45 | Letian WU | 14 | Trafford Met | 10:06.35 |
| 8 | 43 | Millie WALKER | 14 | Co Leeds | 10:24.89 |
| 9 | 41 | Robyn HOWARD | 13 | Co Leeds | 10:31.27 |