EVENT 301 Mixed 10 Yrs/Over 800m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Skye WARREN | 11 | Lincoln TSA | 15:00.00 |
| 2 | 2 | Kaylyn PRIOR | 11 | Nene Valley | 14:36.56 |
| 3 | 3 | Henry RAITT | 11 | Corby | 14:30.00 |
| 4 | 4 | Elizabeth FAHEY | 11 | Newark | 14:30.00 |
| 5 | 5 | Oliver ERSKINE | 12 | Lincoln TSA | 14:23.71 |
| 6 | 6 | Theodor BULAT | 12 | Co Lincoln P | 14:00.00 |
| 7 | 7 | Ava MORGAN | 11 | Co Lincoln P | 14:00.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 8 | Evelyn NICHOLLS | 11 | Grantham | 14:00.00 |
| 2 | 9 | Evangeline KINNEAR | 12 | Grantham | 14:00.00 |
| 3 | 10 | Isla ROBINSON | 11 | Co Lincoln P | 13:23.57 |
| 4 | 11 | Hugo FLIKWEERT | 11 | Nene Valley | 13:11.50 |
| 5 | 12 | Oscar PAWLOWSKI | 10 | Corby | 13:00.50 |
| 6 | 13 | Benjamin GODDARD | 12 | Grantham | 13:00.00 |
| 7 | 14 | Hollie-Ann CROOK | 11 | Grantham | 13:00.00 |
| 8 | 15 | William PENNOCK | 11 | Grantham | 13:00.00 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 16 | Ella KHAMA | 11 | Grantham | 13:00.00 |
| 2 | 17 | Madeline SURTEES | 12 | Grantham | 13:00.00 |
| 3 | 18 | Louis WRIGHT | 12 | Grantham | 13:00.00 |
| 4 | 19 | Matilda MCDONNELL | 12 | Grantham | 13:00.00 |
| 5 | 20 | Victoria MCKAY | 12 | Gainsborough | 12:54.51 |
| 6 | 21 | Oscar CUTMORE | 11 | Corby | 12:52.25 |
| 7 | 22 | Ophelia GOODALE | 11 | Deepings | 12:50.00 |
| 8 | 23 | Freddie HIRST | 11 | Grantham | 12:38.18 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 24 | Derrin BROCKLEBANK | 11 | Grantham | 12:38.00 |
| 2 | 25 | Lucy ABBOTT | 13 | Grantham | 12:30.88 |
| 3 | 26 | Ava-Grace GREGORY | 13 | Grantham | 12:30.00 |
| 4 | 27 | Olivia HAJO | 15 | Corby | 12:29.11 |
| 5 | 28 | Amelie TANNER | 14 | Corby | 12:02.30 |
| 6 | 29 | Kai HILAROWICZ | 12 | Co Lincoln P | 12:02.04 |
| 7 | 30 | Lily STEVENS | 11 | Calv Bing | 12:00.00 |
| 8 | 31 | Cameron JAMISON | 10 | Lincoln TSA | 12:00.00 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 32 | Oliver TRENWITH | 12 | Corby | 11:59.00 |
| 2 | 33 | Thomas HILLSON | 12 | Grantham | 11:50.33 |
| 3 | 34 | Elliot GLEAVE | 12 | Grantham | 11:48.73 |
| 4 | 35 | Katie BEASTALL | 12 | Co Lincoln P | 11:45.00 |
| 5 | 36 | Toby EDMONDSON | 11 | Grantham | 11:40.00 |
| 6 | 37 | Laura HARDY | 41 | Deepings | 11:34.89 |
| 7 | 38 | Robyn STEEL | 12 | Co Lincoln P | 11:32.76 |
| 8 | 39 | Leo BARNETT | 13 | Grantham | 11:32.72 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 40 | Isabelle CLAYTON | 13 | Grantham | 11:31.82 |
| 2 | 41 | Henry DOLAN | 12 | Grantham | 11:31.00 |
| 3 | 42 | M PARAPIJONAVICIUS | 11 | Grantham | 11:30.00 |
| 4 | 43 | Daisy-Grace WILDISH | 10 | Retford | 11:27.77 |
| 5 | 44 | Lexie SHEWAN | 15 | Grantham | 11:26.68 |
| 6 | 45 | Elisabeth KINNEAR | 15 | Grantham | 11:26.57 |
| 7 | 46 | Joshua KIM | 12 | Grantham | 11:26.28 |
| 8 | 47 | George LEONARD | 13 | Grantham | 11:25.53 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 48 | Isabelle TANNER | 16 | Corby | 11:17.02 |
| 2 | 49 | Isobel DELDERFIELD | 11 | Co Lincoln P | 11:15.00 |
| 3 | 50 | Alexandra BUDREVICIUTE | 12 | Co Lincoln P | 11:15.00 |
| 4 | 51 | Oliver CLARKE | 13 | Deepings | 11:13.26 |
| 5 | 52 | Alfie BLADES | 15 | Gainsborough | 11:10.89 |
| 6 | 53 | Connie MILLNS | 13 | Co Lincoln P | 11:07.39 |
| 7 | 54 | Tristan EKE | 14 | Co Lincoln P | 11:07.25 |
| 8 | 55 | Katherine FLETCHER | 12 | Loughborough | 11:05.22 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 56 | Bobby WALLIS | 12 | Lincoln Vulc | 11:03.60 |
| 2 | 57 | Harry BEASTALL | 13 | Co Lincoln P | 11:00.00 |
| 3 | 58 | Jamie MASON | 15 | Corby | 10:58.00 |
| 4 | 59 | Iris FRENCH | 15 | Lincoln Vulc | 10:55.73 |
| 5 | 60 | Charlotte TURNER | 15 | Lincoln Vulc | 10:52.78 |
| 6 | 61 | Peyton BRIGHT | 14 | Lincoln Vulc | 10:46.42 |
| 7 | 62 | Isla-Rose WILDISH | 11 | Retford | 10:46.33 |
| 8 | 63 | Eleanor BIRINY | 14 | Lincoln Vulc | 10:46.18 |
| Heat Number - 9 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 64 | Amy TAYLOR | 14 | Grantham | 10:43.15 |
| 2 | 65 | Thomas CUMMINS | 15 | St Neot Swan | 10:41.59 |
| 3 | 66 | Ellena HOWITT | 14 | Grantham | 10:39.05 |
| 4 | 67 | Oliver WILKINSON | 13 | Co Lincoln P | 10:36.01 |
| 5 | 68 | Remi-leigh BERRY | 12 | Co Lincoln P | 10:31.85 |
| 6 | 69 | Dan PALMER | 12 | Co Lincoln P | 10:30.34 |
| 7 | 70 | Ethan HUNTER | 14 | Lincoln Vulc | 10:29.00 |
| 8 | 71 | Isabelle PAWLOWSKI | 13 | Corby | 10:22.60 |
| Heat Number - 10 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 72 | Jessica - Rose DAVISON | 15 | Grantham | 10:17.76 |
| 2 | 73 | Lizzy LERESCHE HANDS | 13 | Grantham | 10:15.00 |
| 3 | 74 | Ava SINCLAIR | 14 | Corby | 10:10.15 |
| 4 | 75 | Amy PALMER | 14 | Co Lincoln P | 10:05.44 |
| 5 | 76 | Lucy WILLATTS | 13 | Grantham | 9:53.60 |
| 6 | 77 | Ruby WHITESIDE | 14 | Aquabears | 9:53.33 |
| 7 | 78 | Emily TALKES | 13 | Lincoln Vulc | 9:44.74 |
| 8 | 79 | Luke DAYBELL | 16 | Grantham | 9:42.00 |
| Heat Number - 11 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 81 | Chloe HOPKINSON | 20 | Grantham | 9:36.10 |
| 2 | 83 | Jack HICKS | 15 | Lincoln Vulc | 9:29.19 |
| 3 | 85 | Ben CARLYLE | 15 | Grantham | 9:23.15 |
| 4 | 87 | Sam BRYLKA | 16 | Corby | 8:50.00 |
| 5 | 86 | Zach HOPKINSON | 16 | Grantham | 9:16.76 |
| 6 | 84 | Daniel HEPPLESTONE | 15 | Co Lincoln P | 9:27.01 |
| 7 | 82 | Archie FRENCH | 16 | Lincoln Vulc | 9:32.93 |
| 8 | 80 | Ethan WOOLSEY | 14 | St Neot Swan | 9:41.56 |