EVENT 202 Mixed 09 Yrs/Over 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Theodor BULAT | 11 | Co Lincoln P | 8:00.00 |
| 2 | 3 | Erin SMITH | 9 | Deepings | 8:00.00 |
| 3 | 5 | Zachary TOMLINSON | 11 | Co Lincoln P | 7:20.00 |
| 4 | 7 | Harry MELDRUM | 13 | Co Lincoln P | 7:00.00 |
| 5 | 6 | Daniel GODDARD | 9 | Grantham | 7:15.00 |
| 6 | 4 | Damir IVANOVS | 9 | Boston | 7:28.99 |
| 7 | 2 | Fraser GLOVER | 10 | Co Lincoln P | 8:00.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 9 | Hollie-Anne CROOK | 10 | Grantham | 6:54.78 |
| 2 | 11 | Freya HUGHES | 11 | Co Lincoln P | 6:50.00 |
| 3 | 13 | Ophelia GOODALE | 10 | Deepings | 6:50.00 |
| 4 | 15 | Caitlynn EDMEADES | 10 | Deepings | 6:49.38 |
| 5 | 14 | Lucy BURNETT | 12 | Co Lincoln P | 6:50.00 |
| 6 | 12 | Niamh KERRIGAN | 11 | Co Lincoln P | 6:50.00 |
| 7 | 10 | Laura LOVETT | 11 | Co Lincoln P | 6:50.00 |
| 8 | 8 | Evangeline KINNEAR | 11 | Grantham | 6:54.80 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 17 | Benjamin GODDARD | 11 | Grantham | 6:48.27 |
| 2 | 19 | Ryan BARGH | 12 | Co Lincoln P | 6:30.00 |
| 3 | 21 | Katie BEASTALL | 11 | Co Lincoln P | 6:30.00 |
| 4 | 23 | Isabella TRAGNI | 12 | Co Lincoln P | 6:30.00 |
| 5 | 22 | Isobel DELDERFIELD | 10 | Co Lincoln P | 6:30.00 |
| 6 | 20 | Isla ROBINSON | 10 | Co Lincoln P | 6:30.00 |
| 7 | 18 | Arlo HAMER | 12 | Co Lincoln P | 6:30.00 |
| 8 | 16 | Emilie WEBB | 14 | Grantham | 6:49.25 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 25 | Derrin BROCKLEBANK | 10 | Grantham | 6:26.11 |
| 2 | 27 | Ava-Grace GREGORY | 12 | Grantham | 6:20.23 |
| 3 | 29 | Elliot GLEAVE | 11 | Grantham | 6:19.82 |
| 4 | 31 | Rosie JONES | 13 | Deepings | 6:17.70 |
| 5 | 30 | Toby EDMONDSON | 10 | Grantham | 6:18.30 |
| 6 | 28 | Daisy CANTILLON | 12 | Grantham | 6:20.23 |
| 7 | 26 | Leo BARNETT | 12 | Grantham | 6:20.23 |
| 8 | 24 | Alexandra BUDREVICIUTE | 11 | Co Lincoln P | 6:30.00 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 33 | Lottie Ava FLATTERS | 12 | Deepings | 6:15.40 |
| 2 | 35 | Charlotte GOSLING | 15 | Newark | 6:13.92 |
| 3 | 37 | Daisy-Grace WILDISH | 9 | Retford | 6:10.00 |
| 4 | 39 | Arthur SAMMUT | 12 | Co Lincoln P | 6:00.00 |
| 5 | 38 | Martha PIERCEY | 14 | Skegness | 6:02.78 |
| 6 | 36 | Bobby WALLIS | 11 | Co Lincoln P | 6:13.20 |
| 7 | 34 | Harry BEASTALL | 12 | Co Lincoln P | 6:15.00 |
| 8 | 32 | Lucy ABBOTT | 12 | Grantham | 6:15.67 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 41 | Emilia THORNLEY-PAYNE | 16 | Boston | 5:59.99 |
| 2 | 43 | Erin NORTON | 14 | Boston | 5:55.55 |
| 3 | 45 | Catherine SINCLAIR | 11 | Co Lincoln P | 5:55.00 |
| 4 | 47 | William VINTER | 14 | Co Lincoln P | 5:50.00 |
| 5 | 46 | Eleanor TWINLEY | 14 | Deepings | 5:54.70 |
| 6 | 44 | Kai HILAROWICZ | 11 | Co Lincoln P | 5:55.00 |
| 7 | 42 | Isabelle CLAYTON | 12 | Grantham | 5:58.70 |
| 8 | 40 | Jessica BARGH | 14 | Co Lincoln P | 6:00.00 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 49 | Millie POOLE | 14 | Co Lincoln P | 5:46.25 |
| 2 | 51 | George LEONARD | 12 | Grantham | 5:44.95 |
| 3 | 53 | Elisabeth KINNEAR | 14 | Grantham | 5:42.10 |
| 4 | 55 | Amelia BIRD | 13 | Skegness | 5:40.59 |
| 5 | 54 | Lucia CHIVERS | 12 | Newark | 5:42.00 |
| 6 | 52 | Jack MARTIN | 15 | Newark | 5:44.00 |
| 7 | 50 | Tristan EKE | 13 | Co Lincoln P | 5:45.00 |
| 8 | 48 | Janna SCHUERCH | 14 | Co Lincoln P | 5:50.00 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 57 | Charlotte WELGEMOED | 13 | Co Lincoln P | 5:40.00 |
| 2 | 59 | Luke MARTIN | 15 | Newark | 5:37.00 |
| 3 | 61 | Robyn STEEL | 11 | Co Lincoln P | 5:36.00 |
| 4 | 63 | Dan PALMER | 11 | Co Lincoln P | 5:29.10 |
| 5 | 62 | Oliver CLARKE | 12 | Deepings | 5:29.50 |
| 6 | 60 | Miley RICHARDSON | 11 | Co Lincoln P | 5:36.14 |
| 7 | 58 | Emily PENNELL | 14 | Co Lincoln P | 5:40.00 |
| 8 | 56 | Connie MILLNS | 12 | Co Lincoln P | 5:40.00 |
| Heat Number - 9 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 65 | Isabella REYNOLDS | 13 | Deepings | 5:27.70 |
| 2 | 67 | Erin ARCHER | 13 | Co Lincoln P | 5:23.33 |
| 3 | 69 | Amy TAYLOR | 13 | Grantham | 5:21.32 |
| 4 | 71 | Finley ROWDING | 13 | Co Lincoln P | 5:17.00 |
| 5 | 70 | Cole COOPER | 12 | Co Lincoln P | 5:17.00 |
| 6 | 68 | Ben ALLISTON | 14 | Deepings | 5:22.88 |
| 7 | 66 | Annabelle JAY | 12 | Grantham | 5:26.43 |
| 8 | 64 | Lexie SHEWAN | 14 | Grantham | 5:28.25 |
| Heat Number - 10 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 73 | Ellena HOWITT | 13 | Grantham | 5:13.56 |
| 2 | 75 | Sophie ALLISTON | 13 | Deepings | 5:10.00 |
| 3 | 77 | Kieron TOMS | 14 | Deepings | 5:05.80 |
| 4 | 79 | Alice-Mae DOWNS | 15 | Co Lincoln P | 5:03.89 |
| 5 | 78 | Ben CARLYLE | 14 | Grantham | 5:05.39 |
| 6 | 76 | Sophie WARD | 15 | Grantham | 5:08.33 |
| 7 | 74 | Remi-leigh BERRY | 11 | Co Lincoln P | 5:10.90 |
| 8 | 72 | Finley WEST | 13 | Co Lincoln P | 5:17.00 |
| Heat Number - 11 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 81 | Isla GRAY | 14 | Grantham | 4:52.67 |
| 2 | 83 | Gareth COCKS | 35 | Co Lincoln P | 4:43.91 |
| 3 | 85 | Morgan FARRAR | 15 | Co Lincoln P | 4:33.71 |
| 4 | 87 | Ryan NORTON | 17 | Boston | 4:28.01 |
| 5 | 86 | Daniel HEPPLESTONE | 14 | Co Lincoln P | 4:33.50 |
| 6 | 84 | Hannah DODWELL | 30 | Co Lincoln P | 4:38.00 |
| 7 | 82 | Riley HAMER | 14 | Co Lincoln P | 4:50.00 |
| 8 | 80 | Oliver GARNER | 14 | Co Lincoln P | 4:54.73 |