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last completed editionCanalrace C.I.C.
Grand Union Canal Race 145
Last completed: Saturday, 23 May 2026 – Sunday, 24 May 2026Birmingham to London, England
A non-stop canal-towpath ultra from Gas Street Basin in Birmingham to Little Venice in London, with supported and unsupported categories.
Official race site (opens in a new tab)
Optional device-only history; never synced to your account. Shared-device users can leave it off.
Distance145 mi
Ascent963m*
Climb / km4.1m
Cutoff45h
Cutoff pace11:34/km
TechnicalityUnknown
EntryFrom £75
FormatPoint-to-point
Last completed edition
23 May 2026 – 24 May 2026
Next edition not yet announced
The organiser has not yet published a confirmed future edition in our sources. The facts below describe the 2026 running and are retained for comparison and runner history.
Edition archive
This is the only edition currently stored for this race family. Earlier verified editions can be added without changing the permanent race URL.
Check the official race source (opens in a new tab)Race For You difficulty
7.8/ 10
Very hard
Moderate evidence confidence · 68% evidence coverage
This score is driven most by substantial race distance, accumulated fatigue and format burden, exposure and self-sufficiency. Difficulty V2's separate time-limit modifier adds 0.15 points here and is capped at 0.70; a broad limit cannot erase extreme intrinsic demand. This is independent of the public Cutoff Pressure V2 band.
Weather, conditions and individual preparation can change the real difficulty significantly.
How the score works Distance, weighted 30 percent7.9 out of 10
Climbing, weighted 25 percent2.2 out of 10
Technicality, weighted 15 percent5.5 out of 10
Accumulated burden, weighted 17 percent7 out of 10
Exposure & support, weighted 13 percent6.3 out of 10
Course analysis
What shapes this race
Expect long runnable canal sections where pace discipline matters more than technical skill, largely runnable, non-technical surfaces.
canaltrailnon-technical
Climbing density
4.1m per km
A more useful comparison than total ascent alone: it shows how consistently the course asks you to climb.
Cutoff analysis
Moderate pressure
To finish inside 45h, the raw average required is 11:34 per kilometre (18:37 per mile), including every stop.
Raw pace11:34/km
PressureModerate pressure
Cutoff pressure compares the published time limit with distance, ascent and verified course demands. Lower pressure does not mean the race is easy. Raw pace includes checkpoints, food stops, navigation errors and any sleep; it is not a pacing plan.
Who this suits
First ultra?
There is not enough verified information to assess first-ultra suitability yet.
Navigation
partially marked
Do not assume closed-road-race levels of signage. Know the organiser’s navigation requirements and keep the official route available.
Exposure & kit
unknown kit
Significant overnight running is likely for many entrants. Lighting, temperature management and sleep strategy can materially affect the outcome.
Personal race predictor
Prediction unavailable
No current compatible predictor target is available for this family. The selected edition may be complete or cancelled, awaiting a successor, non-standard, or missing model-critical course evidence; older facts are not substituted.
Latest verification
Trust the source, see the gaps.
Data PartialCompleted from 06:00 on 23 May 2026 with 39 finishers. The official manual supports the marketed 145 miles and approximately 3,159ft/963m ascent. The limit was 45 hours; supported entry was £75 and unsupported £115, plus £2 for unattached runners. No later official edition was announced by the check date.
- Successful source check
- 3 Sept 2026
- Catalogue record updated
- 3 Sept 2026
- Official source
- Available
Elevation is approximate or awaiting final confirmation.
Official source 1 (opens in a new tab)Official source 2 (opens in a new tab)Official source 3 (opens in a new tab)
Event details can change after a successful source check. Confirm the final route, kit, cutoff, price and entry terms directly with the organiser before entering or travelling.
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