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entries openRunThrough Trails
RunThrough Brecon Beacons 51K
Next edition: Saturday, 7 August 2027Talybont-on-Usk, Wales
The 51K course in RunThrough Trails' Bannau Brycheiniog event from Talybont-on-Usk.
Official race site (opens in a new tab)
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Distance31.7 mi
AscentUnknown
Climb / kmUnknown
Cutoff12h
Cutoff pace14:07/km
TechnicalityUnknown
EntryFrom £90.3
FormatUnknown
Next edition
7 August 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
2026Past edition
These facts belong to the 2026 edition only. Missing values have not been copied from another year.
- Distance
- 51.77 km
- Ascent
- 2,169m approx.
- Cutoff
- 10h
- Entry
- £95
- Format
- continuous · single stage · looped
- Stage layout
- Not applicable
Successful source check: 3 Sept 2026Source confidence: mediumThe organiser page verifies 8 August 2026, the 51K product, £95, marked-plus-GPX navigation and a 10-hour limit; UTMB and official tracking verify results. The UTMB route metrics are retained with Medium confidence and no next edition is inferred.
Check RunThrough Brecon Beacons 51K 2026 source (opens in a new tab)
Race For You difficulty
4.2/ 10
Moderate
Limited input evidence · 10% evidence coverage
The main recorded demands are balanced overall demands. Course difficulty and cutoff pressure describe different challenges: more approachable terrain can still require a demanding pace to beat the deadline. Neither score assesses your personal fitness, safety or readiness.
Scoring details and version
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. Evidence coverage describes the recorded inputs, not prediction accuracy or your likelihood of finishing.
Weather, conditions and individual preparation can change the real difficulty significantly.
How the score works Distance, weighted 30 percent3 out of 10
Climbing, weighted 25 percent5.5 out of 10
Technicality, weighted 15 percent5.5 out of 10
Accumulated burden, weighted 17 percent1.9 out of 10
Exposure & support, weighted 13 percent5.5 out of 10
Course analysis
What shapes this race
Expect sustained upland ground and meaningful climbing.
trailmountainmixed
Cutoff analysis
Low–moderate pressure
To finish inside 12h, the raw average required is 14:07 per kilometre (22:43 per mile), including every stop.
Raw pace14:07/km
PressureLow–moderate 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.
Because ascent is not verified, Cutoff Pressure V2 uses the model's neutral 20m/km reference density. This assumption does not fill the ascent value or make missing evidence look easy.
Who this suits
First ultra?
There is not enough verified information to assess first-ultra suitability yet.
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
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.
Practical detail
Support & logistics
StartHenderson Hall, Talybont-on-Usk, Brecon LD3 7YQ
Support levelunknown
Logistics are only shown where currently recorded. Confirm parking, transport, crew access and final aid-station plans with the organiser.
Latest verification
Trust the source, see the gaps.
Data PartialField-scoped check 2026-11-06: The 51K entry option is now £86 plus 5% booking fee (£90.30), at the current early-bird tier. Optional extras are excluded. Other facts retain earlier verification dates.
- Successful source check
- 28 Sept 2026
- Catalogue record updated
- 6 Nov 2026
- Official source
- Available
Still unverified: elevation.
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.
Found something wrong?
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