EVENT 508 Boys 11 Yrs/Over 1500m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | Maxwell Burdett | 11 | Co Leicester | 20:02.51 |
| 2 | 4 | William Vere | 14 | South Lincs | 19:51.70 |
| 3 | 6 | Corey Butterell-Quanbr | 13 | Bassetlaw SS | 19:16.09 |
| 4 | 8 | Joel Harby | 14 | Nova Cent'n | 19:00.99 |
| 5 | 7 | William Oxley | 13 | Co Leicester | 19:02.90 |
| 6 | 5 | Lucas Kimber | 14 | Derby Excel | 19:26.80 |
| 7 | 3 | Freddie Burdett | 13 | Co Leicester | 19:53.50 |
| 8 | 1 | James Huckle | 12 | Lincoln Vulc | 22:00.10 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 10 | Matteo Monaco | 14 | South Lincs | 18:36.30 |
| 2 | 12 | Jacob Pemberton | 14 | BelperMarlin | 18:24.76 |
| 3 | 14 | Oliver Richmond | 15 | Nova Cent'n | 18:20.46 |
| 4 | 16 | Brodie Butlin | 14 | Nova Cent'n | 18:16.86 |
| 5 | 15 | Ethan Ford | 16 | Co Leicester | 18:19.03 |
| 6 | 13 | Samuel Green | 13 | Bassetlaw SS | 18:22.07 |
| 7 | 11 | Zach Hopkinson | 14 | Grantham | 18:27.20 |
| 8 | 9 | Liam Lyons | 14 | BelperMarlin | 18:52.42 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 18 | Oliver Davies | 14 | Co Leicester | 18:14.09 |
| 2 | 20 | Seth Hems Gillson | 13 | Repton | 18:10.70 |
| 3 | 22 | Edun Rowe | 15 | Northampton | 18:05.64 |
| 4 | 24 | Jack Bignell | 15 | Northampton | 17:52.37 |
| 5 | 23 | Lewis Fitch | 16 | Co Leicester | 18:00.10 |
| 6 | 21 | Joseph Laurie | 15 | Nova Cent'n | 18:10.48 |
| 7 | 19 | Jack Hurry | 14 | Northampton | 18:10.79 |
| 8 | 17 | Elliott Barker | 16 | Northampton | 18:15.23 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 26 | Manav Mistry | 16 | Northampton | 17:39.47 |
| 2 | 28 | Oliver Sorrell | 16 | South Lincs | 17:28.10 |
| 3 | 30 | Owen Hathway | 17 | Grantham | 17:15.00 |
| 4 | 32 | Luke Stevens | 17 | Co Leicester | 17:04.76 |
| 5 | 31 | Oscar Goldsmith | 15 | South Lincs | 17:06.00 |
| 6 | 29 | Alfie Bisby | 16 | South Lincs | 17:20.97 |
| 7 | 27 | Oliver Silver | 17 | Radford | 17:28.63 |
| 8 | 25 | Joseph Mulligan | 17 | Bramcote | 17:42.04 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 34 | Alex Keeble | 19 | Leic Sharks | 16:53.90 |
| 2 | 36 | Daniel Walker | 16 | Nova Cent'n | 16:50.60 |
| 3 | 38 | Luke Jeal | 20 | Nova Cent'n | 16:42.90 |
| 4 | 40 | Thomas Sansome | 20 | Lboro Uni | 16:05.85 |
| 5 | 39 | Joseph Kingsland | 20 | Nova Cent'n | 16:12.30 |
| 6 | 37 | Archie Neaves | 18 | Co Leicester | 16:48.70 |
| 7 | 35 | Daniel Harris | 16 | Co Leicester | 16:50.70 |
| 8 | 33 | Benjamin Gibbons | 16 | Northampton | 17:01.12 |