EVENT 214 Mixed 09 Yrs/Over 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Henry LEONARD | 9 | Grantham | |
| 4 | 2 | Y CHEUNG | 12 | Grantham | |
| 5 | 3 | Alex HUCKLE | 9 | Co Lincoln P | 7:30.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 4 | Jasmine CHEETHAM | 11 | Lincoln Vulc | 6:40.46 |
| 2 | 5 | Stanley TAYLOR | 14 | Co Lincoln P | 6:30.00 |
| 3 | 6 | Yu Ching CHEUNG | 14 | Grantham | 6:17.93 |
| 4 | 7 | Millie MACKIE | 12 | Co Lincoln P | 6:06.90 |
| 5 | 8 | Sophia CUFFLEY | 10 | Lincoln Vulc | 6:05.47 |
| 6 | 9 | Lucy BARRATT | 13 | Gainsborough | 6:02.00 |
| 7 | 10 | Isla ROBINSON | 12 | Co Lincoln P | 5:47.37 |
| 8 | 11 | Caitlin CROSS | 13 | Lincoln Vulc | 5:47.24 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 12 | Ethan COUGHLAN | 13 | Lincoln Vulc | 5:44.89 |
| 2 | 13 | Ava-Grace GREGORY | 13 | Grantham | 5:40.14 |
| 3 | 14 | Isabelle CLAYTON | 13 | Grantham | 5:39.04 |
| 4 | 15 | Catherine SINCLAIR | 13 | Co Lincoln P | 5:29.36 |
| 5 | 16 | Derrin BROCKLEBANK | 12 | Grantham | 5:27.14 |
| 6 | 17 | Toby BROWN | 13 | Deepings | 5:23.31 |
| 7 | 18 | Isla SCOTT | 15 | Lincoln Vulc | 5:15.85 |
| 8 | 19 | Leo BARNETT | 14 | Grantham | 5:14.89 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 21 | Isobel DELDERFIELD | 12 | Co Lincoln P | 5:11.33 |
| 2 | 23 | George RIDOUT | 12 | Retford | 5:05.23 |
| 3 | 25 | Elena ALDENHOFF-KELLY | 17 | Grantham | 4:55.40 |
| 4 | 27 | Luke DAYBELL | 16 | Grantham | 4:31.71 |
| 5 | 26 | Finley WEST | 14 | Co Lincoln P | 4:54.76 |
| 6 | 24 | Remi-leigh BERRY | 13 | Co Lincoln P | 5:04.73 |
| 7 | 22 | Markas PARAPIJONAVICIU | 12 | Grantham | 5:08.52 |
| 8 | 20 | Bobby WALLIS | 13 | Co Lincoln P | 5:12.99 |