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Beast of the Beacons 40
Next edition: Saturday, 17 April 2027Talybont-on-Usk, Wales
A distinct 40-mile Bannau Brycheiniog loop based at Talybont-on-Usk.
Official race site (opens in a new tab)
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Distance40.4 mi
Ascent2,572m*
Climb / km39.6m
Cutoff16h
Cutoff pace14:46/km
TechnicalityUnknown
Entry£90
FormatLooped
Next edition
17 April 2027
This is the most relevant confirmed edition currently held for the permanent race family. Edition-specific facts should still be checked against the final organiser instructions.
Edition archive
Expand an edition to inspect its year-specific facts. Other years never replace the primary edition facts.
Past editions
2026Completed
These facts belong to the 2026 edition only. Missing values have not been copied from another year.
- Distance
- 64.37 km
- Ascent
- Not verified
- Cutoff
- Not published
- Entry
- Not verified
- Format
- continuous · single stage · looped
- Stage layout
- Not applicable
Successful source check: 3 Sept 2026Source confidence: highThe organiser results archive confirms the completed 18 April 2026 40-mile product. Other metrics remain unknown rather than borrowing 2027 facts.
Check Beast of the Beacons 40 2026 source (opens in a new tab)
Race For You difficulty
4.1/ 10
Moderate
Moderate evidence confidence · 57% evidence coverage
This score is driven most by balanced overall demands. Difficulty V2's separate time-limit modifier adds 0.00 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 percent3.5 out of 10
Climbing, weighted 25 percent5.3 out of 10
Technicality, weighted 15 percent5.5 out of 10
Accumulated burden, weighted 17 percent2.3 out of 10
Exposure & support, weighted 13 percent4.3 out of 10
Course analysis
What shapes this race
Expect sustained upland ground and meaningful climbing, sections where foot placement and downhill confidence matter, exposed moorland where weather can amplify the difficulty.
trailmountainmoorlandtechnical
Climbing density
39.6m 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 16h, the raw average required is 14:46 per kilometre (23:46 per mile), including every stop.
Raw pace14:46/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
fully marked
The route is described as marked, but runners should still read the final race instructions.
Exposure & kit
unknown kit
Night-running exposure has not been verified for this edition. Check the organiser’s latest schedule, route information and final kit rules.
Personal race predictor
Will you make the cutoff?
Use a previous result to estimate a realistic range for Beast of the Beacons 40, your potential buffer and the biggest change in demand.
Latest verification
Trust the source, see the gaps.
Data PartialThe official page verifies 17 April 2027, 40 miles/65K, 16 hours and £90. Its page body and graphic disagree on ascent; the body value is displayed with a structured official conflict. The approximately 08:00 start remains provisional.
- Successful source check
- 3 Sept 2026
- Catalogue record updated
- 3 Sept 2026
- Official source
- Available
Elevation is approximate or awaiting final confirmation.
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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