2.1km 10m
| Pos | No. | Name | Club/Country | Age Class | Time | Behind |
|---|---|---|---|---|---|---|
| 1st | 2512 | Jake O'Donnell | DVO (GBR) | M12 | 10:47 | |
| 2nd | 2681 | Oliver Prince | SOS (GBR) | M12 | 11:02 | +0:15 |
| 3rd | 2727 | Conrad Reuber | SYO (GBR) | M12 | 11:44 | +0:57 |
| Championship time 13:29 | ||||||
| 4th | 1754 | Ben Glover | LEI (GBR) | M12 | 13:43 | +2:56 |
| 5th | 3174 | Laurence Ward | INT (GBR) | M12 | 13:45 | +2:58 |
| Gold time 13:59 | ||||||
| 6th | 2400 | Arthur Mitchell | HOC (GBR) | M12 | 14:52 | +4:05 |
| 7th | 2164 | Angus Laird | INVOC (GBR) | M12 | 15:02 | +4:15 |
| 8th= | 2985 | Theo Steventon-Barnes | SUFFOC (GBR) | M12 | 15:21 | +4:34 |
| 8th= | 1216 | Harry Bratcher-Howard | WIM (GBR) | M12 | 15:21 | +4:34 |
| 10th | 1262 | James Bryant | SYO (GBR) | M12 | 15:39 | +4:52 |
| 11th | 2835 | Benedict Sanderson | NATO (GBR) | M12 | 15:46 | +4:59 |
| Silver time 16:47 | ||||||
| 12th | 2018 | Isaac Hunter | WCOC (GBR) | M12 | 17:33 | +6:46 |
| 13th | 2790 | Tommy Rollins | SN (GBR) | M12 | 19:23 | +8:36 |
| 14th | 3225 | Hugh Whelan | WatO (IRL) | M12 | 19:36 | +8:49 |
| 15th | 2393 | Luke Mills-Hicks | GO (GBR) | M12 | 19:58 | +9:11 |
| 16th | 1417 | Jamie Connor | FVO (GBR) | M12 | 19:59 | +9:12 |
| 17th | 1994 | Austin Howe | SAX (GBR) | M12 | 21:36 | +10:49 |
| Bronze time 22:22 | ||||||
| 18th | 3237 | Cian Wickham | Ajax (IRL) | M12 | 25:59 | +15:12 |
| 19th | 1049 | Richard Askham | SMOC (GBR) | M12 | 29:15 | +18:28 |
| 20th | 3319 | Lewis Yates | BL (GBR) | M12 | 29:58 | +19:11 |
| 21st | 2494 | Cian O Donnell | GEN (IRL) | M12 | 30:48 | +20:01 |
| 22nd | 2106 | Tom Joyce | CNOC (IRL) | M12 | 39:51 | +29:04 |
| 23rd | 2640 | Luke Phoenix | SYO (GBR) | M12 | 47:08 | +36:21 |
| 24th | 2455 | Oliver Murphy | DEE (GBR) | M12 | 89:21 | +78:34 |
| 2168 | Freddie Lake | SBOC (GBR) | M12 | w15 | ||
| 2187 | Finn Le Page | SN (GBR) | M12 | m7-17 | ||