EVENT 306 Boy 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 2 | Lewis Peggs | 11 | Loftus Dol | 1:41.88 |
| 3 | 4 | Nicholas Giles | 13 | South Tyne | 1:30.79 |
| 4 | 3 | Sasha Heer | 15 | Billingham | 1:35.00 |
| 5 | 1 | Anesu Tiyenga | 12 | Bo Stockton | 1:45.45 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 6 | Joshua McKenzie | 13 | Bo Stockton | 1:24.28 |
| 2 | 8 | William Davies | 12 | Loftus Dol | 1:21.40 |
| 3 | 10 | Elliot Arnell | 12 | AFSHartlepol | 1:18.20 |
| 4 | 9 | Charlie Ward | 12 | Bo Stockton | 1:19.00 |
| 5 | 7 | Alexander Anderson | 13 | AFSHartlepol | 1:22.89 |
| 6 | 5 | Lewis Richardson | 17 | Gates &Whick | 1:27.47 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 12 | Michael Hewitt | 15 | AFSHartlepol | 1:13.24 |
| 2 | 14 | Henry Barker | 17 | Loftus Dol | 1:13.01 |
| 3 | 16 | Ben Giles | 15 | South Tyne | 1:10.79 |
| 4 | 15 | Lewis Kestle | 13 | Darlington | 1:11.20 |
| 5 | 13 | Samuel Antrobus | 13 | Bo Stockton | 1:13.13 |
| 6 | 11 | Conan Swinney | 12 | Gates &Whick | 1:17.80 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 18 | Archie Barker | 17 | Loftus Dol | 1:09.03 |
| 2 | 20 | Mateusz Wilczynski | 15 | Sedgefield | 1:07.91 |
| 3 | 22 | James McLeary | 16 | Darlington | 1:05.25 |
| 4 | 21 | Max Butler | 17 | Darlington | 1:05.35 |
| 5 | 19 | Isaac Rowland | 14 | Bo Stockton | 1:08.69 |
| 6 | 17 | Filip Wilczynski | 12 | Sedgefield | 1:10.00 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 24 | Daniel Wood | 22 | AFSHartlepol | 1:04.12 |
| 2 | 28 | Max Upton | 17 | Billingham | 1:00.14 |
| 3 | 30 | Jamie Ewart | 25 | AFSHartlepol | 58.60 |
| 4 | 29 | Patrick Speight | 17 | Gates &Whick | 1:00.06 |
| 5 | 27 | Richard Murray | 21 | Darlington | 1:02.09 |
| 6 | 23 | Luke Gaughan | 14 | Billingham | 1:05.10 |