9.4km 435m
| Pos | No. | Name | Club | Country | Age Class | Time | Behind |
|---|---|---|---|---|---|---|---|
| 1st | 1480 | Tom Wood | ERYRI | CYM |
M20 | 56:36 | |
| 2nd | 2550 | Daniel Spencer | EUOC | GBR |
M20 | 58:42 | +2:06 |
| 3rd | 1133 | Alasdair Pedley | EUOC | GBR |
M20 | 59:04 | +2:28 |
| 4th | 3626 | Freddie Carcas | INT | GBR |
M20 | 59:52 | +3:16 |
| 5th | 3446 | Joseph Wright | EUOC | SCO |
M20 | 60:02 | +3:26 |
| 6th | 3643 | Tom Lines | EUOC | GBR |
M20 | 61:44 | +5:08 |
| 7th | 1150 | Harry Scott | SHUOC | GBR |
M20 | 62:35 | +5:59 |
| 8th | 2031 | Alastair George | Big Foot | AUS |
M20 | 64:24 | +7:48 |
| 9th | 2849 | Thomas Laraia | EUOC | GBR |
M20 | 66:55 | +10:19 |
| 10th | 3117 | Daniel Weaver | UBOC | ENG |
M20 | 69:25 | +12:49 |
| 11th | 2283 | Max F.A. Bloor | INT | GBR |
M20 | 70:30 | +13:54 |
| Championship time 70:45 | |||||||
| 12th | 3360 | Daniel Gray | Ugly Gully | AUS |
M20 | 70:51 | +14:15 |
| 13th | 2661 | Ryan Elliot | SYO | GBR |
M20 | 72:03 | +15:27 |
| Gold time 72:39 | |||||||
| 14th | 1632 | Sam Yates | LOC | GBR |
M20 | 73:12 | +16:36 |
| 15th | 3590 | Lachlan Chavasse | QO | GBR |
M20 | 73:54 | +17:18 |
| 16th | 2060 | Ben Breeze | WCOC | GBR |
M20 | 74:39 | +18:03 |
| 17th | 1140 | Sam Leadley | OD | GBR |
M20 | 80:08 | +23:32 |
| 18th | 2776 | Joseph Goodwin | WCOC | GBR |
M20 | 81:21 | +24:45 |
| 19th | 3649 | Alexander O'Donovan | LOC | GBR |
M20 | 81:36 | +25:00 |
| 20th | 3736 | Joseph Twigg | LUOC | ENG |
M20 | 82:44 | +26:08 |
| 21st | 3785 | Rudi Paul | STAG | SCO |
M20 | 83:21 | +26:45 |
| Silver time 87:11 | |||||||
| 22nd | 2931 | River Edis-Smith | MDOC | GBR |
M20 | 88:29 | +31:53 |
| 23rd | 1401 | Arsac-England Tom | Altaïr C.O. | BEL |
M20 | 93:29 | +36:53 |
| 24th | 3348 | Peter Dobra | UBOC | GBR |
M20 | 94:06 | +37:30 |
| 25th | 2366 | James Nisbet | SMOC | GBR |
M20 | 96:41 | +40:05 |
| 26th | 3381 | Connor Cleary | PAPO | NZL |
M20 | 109:49 | +53:13 |
| 27th | 3450 | Joe Uprichard | DVO | GBR |
M20 | 111:53 | +55:17 |
| Bronze time 116:14 | |||||||
| 2245 | Duncan Currie | Garingal | AUS |
M20 | m2-10 | ||
| 5178 | Eddie Norbett | EUOC | SCO |
M20 | m14-15 | ||