EVENT 108 Mixed 800m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 2 | Solomon COFFEY-WILLS | 11 | Co Leeds | 13:00.00 |
| 1 | 4 | Evie COOK | 11 | Co Leeds | 13:00.00 |
| 2 | 6 | Zachary WHITTAKER | 11 | Co Leeds | 13:00.00 |
| 3 | 8 | Jessica COLLEY | 11 | Co Leeds | 12:30.00 |
| 4 | 10 | Neve STAFFORD | 11 | Co Leeds | 12:30.00 |
| 5 | 9 | Ted WINGFIELD | 10 | Co Leeds | 12:30.00 |
| 6 | 7 | Michelle BROGDEN | 10 | Co Leeds | 13:00.00 |
| 7 | 5 | Finn EASINGWOOD | 11 | Co Leeds | 13:00.00 |
| 8 | 3 | Alana RANKIN | 11 | Co Leeds | 13:00.00 |
| 9 | 1 | Jasmine BERRY | 17 | Bo Kirklees | 13:25.85 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 12 | Madeleine FLAHERTY | 11 | Co Leeds | 12:30.00 |
| 1 | 14 | Isla CUNDILL | 11 | Co Leeds | 12:30.00 |
| 2 | 16 | Isabelle LOK | 10 | Co Leeds | 12:30.00 |
| 3 | 18 | Lauren MCMANUS | 16 | Eckington | 12:17.90 |
| 4 | 20 | George RICKETTS | 11 | Co Leeds | 12:00.00 |
| 5 | 19 | Evelyn ATKINSON | 11 | Co Leeds | 12:00.00 |
| 6 | 17 | Isabelle PARK | 11 | Co Leeds | 12:18.15 |
| 7 | 15 | Betsy KIRKLEY | 11 | Co Leeds | 12:30.00 |
| 8 | 13 | Emilia GRAVILLE | 10 | Co Leeds | 12:30.00 |
| 9 | 11 | Katie SADLER | 10 | Co Leeds | 12:30.00 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 22 | Lucy KEENS | 19 | Hoddesdon | 11:40.00 |
| 1 | 24 | Madison SIMMONDS | 12 | Co Sheffield | 11:38.70 |
| 2 | 26 | Henry PATTERSON | 10 | Co Leeds | 11:30.00 |
| 3 | 28 | Jacob JONES | 12 | Co Leeds | 11:18.43 |
| 4 | 30 | Tyler RAVEN | 11 | Co Leeds | 11:10.00 |
| 5 | 29 | Livia STACEY | 12 | Co Leeds | 11:13.14 |
| 6 | 27 | Tomas BICKERS | 12 | Co Leeds | 11:29.17 |
| 7 | 25 | Zoe FEATHER | 11 | Co Leeds | 11:32.74 |
| 8 | 23 | George KING | 12 | Co Leeds | 11:39.15 |
| 9 | 21 | Addison CROPPER | 11 | Co Leeds | 11:41.80 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 32 | Amelia MATSON | 12 | Co Leeds | 11:08.65 |
| 1 | 34 | Jessica ROLLINGS | 13 | Co Leeds | 11:00.00 |
| 2 | 36 | Darcie WILLIS | 17 | Eckington | 10:36.20 |
| 3 | 38 | Reuben HARRISON | 14 | Co Leeds | 10:04.07 |
| 4 | 40 | Rosie BROGDEN | 12 | Co Leeds | 9:46.90 |
| 5 | 39 | Emily ENGLAND-HALL | 12 | Co Leeds | 9:59.80 |
| 6 | 37 | Robyn HOWARD | 14 | Co Leeds | 10:31.27 |
| 7 | 35 | Oliver BARKER | 11 | Co Leeds | 10:54.59 |
| 8 | 33 | Ellis HARGREAVES | 12 | Co Leeds | 11:03.56 |
| 9 | 31 | Willow WRIGHT | 11 | Co Leeds | 11:09.22 |