9.775km 400m
| Pos | Name | Club | Age Class | Time | British |
|---|---|---|---|---|---|
| 1st | Matthew Fellbaum | MDOC | M18 | 71:03 | Y |
| 2nd | Alex Carcas | INT | M18 | 72:52 | Y |
| 3rd | Harrison McCartney | OD | M18 | 73:28 | Y |
| 4th | Finlay Todd | INVOC | M18 | 73:56 | Y |
| 5th | Alasdair Pedley | EPOC | M18 | 74:12 | Y |
| 6th | Aidan Rigby | CLOK | M18 | 74:27 | Y |
| 7th | Jack Leitch | SO | M18 | 77:21 | Y |
| 8th | Freddie Carcas | INT | M18 | 78:03 | Y |
| 9th | Tim Harrison | SUFFOC | M18 | 80:07 | Y |
| 10th | Finn Lydon | LEI | M18 | 80:46 | Y |
| 11th | Ewan McMillan | MAROC | M18 | 82:20 | Y |
| 12th | Samuel Fielding | HH | M18 | 83:02 | Y |
| 13th | Tom Lines | ECKO | M18 | 84:04 | Y |
| 14th | Joe Thomas | MWOC | M18 | 92:12 | Y |
| 15th | Noah Howlett | LOC | M18 | 93:30 | Y |
| 16th | Eddie Narbett | BOK | M18 | 96:16 | Y |
| 17th | Lachlan Chavasse | DEE | M18 | 96:21 | Y |
| 18th | Euan Tebbutt | LEI | M18 | 106:55 | Y |
| 19th | Tom Barber | LEI | M18 | 111:35 | Y |
| 20th | Dafydd Thomas | MWOC | M18 | 112:53 | Y |
| rtd | Matthew Leitch | SO | M18 | Y | |
| m8-21 m23-27 | James Ackland | INT | M18 | 50:58 | Y |