EVENT 402 Open/Male 11 /Over 1500m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Mason Traynor | 11 | Co Leicester | 20:14.00 |
| 4 | 3 | Andrew Blair | 13 | Co Leicester | 19:07.40 |
| 5 | 2 | Francesco Monaco | 12 | South Lincs | 19:42.40 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 4 | Jacson Crabb | 13 | Co Leicester | 18:32.80 |
| 1 | 6 | William Oxley | 14 | Co Leicester | 18:14.30 |
| 2 | 8 | Oliver Davies | 15 | Co Leicester | 17:53.11 |
| 3 | 10 | Edun Rowe | 16 | Northampton | 17:33.26 |
| 4 | 12 | Layne Keyworth | 16 | Bassetlaw SS | 17:21.90 |
| 5 | 11 | Jack Bignell | 16 | Northampton | 17:28.94 |
| 6 | 9 | Brodie Butlin | 15 | Nova Cent'n | 17:51.60 |
| 7 | 7 | Matteo Monaco | 15 | South Lincs | 18:03.40 |
| 8 | 5 | Finlay Bird | 14 | Long Eaton | 18:21.40 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 14 | Samuel Green | 14 | Bassetlaw SS | 17:17.76 |
| 1 | 16 | Manav Mistry | 17 | Northampton | 17:04.74 |
| 2 | 18 | David Coyle | 19 | Nova Cent'n | 16:58.50 |
| 3 | 20 | Daniel Walker | 17 | Nova Cent'n | 16:40.90 |
| 4 | 22 | Thomas Wilkinson | 18 | Chesterfield | 16:11.20 |
| 5 | 21 | Daniel Harris | 17 | Co Leicester | 16:40.60 |
| 6 | 19 | Samuel Cooke | 18 | Corby | 16:50.40 |
| 7 | 17 | Joseph Mulligan | 18 | Nova Cent'n | 17:02.80 |
| 8 | 15 | Jack Hurry | 15 | Northampton | 17:10.27 |
| 9 | 13 | Joshua Clarke | 16 | Grantham | 17:21.00 |