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entries openRun Walk Crawl
Brecon to Cardiff Xtreme
Brecon to Cardiff series
Next edition: Sunday, 14 February 2027Brecon to Cardiff, Wales
The longer, higher-climbing Xtreme course from Brecon to Cardiff, kept separate from the Classic route.
Official race site (opens in a new tab)
Optional device-only history; never synced to your account. Shared-device users can leave it off.
Distance47.5 mi
Ascent2,800m*
Climb / km36.6m
Cutoff15h
Cutoff pace11:46/km
TechnicalityUnknown
Entry£90
FormatPoint-to-point
Next edition
14 February 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
- Not published
- Ascent
- Not verified
- Cutoff
- Not published
- Entry
- Not verified
- Format
- Not published
- Stage layout
- Not applicable
Successful source check: 3 Sept 2026Source confidence: highThe official tracker verifies the completed 1 March 2026 Xtreme identity. The old event page now resolves to 2027, so distance, ascent, cutoff, price and course facts remain unknown for 2026.
Check Brecon to Cardiff Xtreme 2026 source (opens in a new tab)
Race For You difficulty
4.9/ 10
Moderate
Moderate evidence confidence · 68% evidence coverage
This score is driven most by exposure and self-sufficiency. Difficulty V2's separate time-limit modifier adds 0.35 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 percent3.9 out of 10
Climbing, weighted 25 percent5.3 out of 10
Technicality, weighted 15 percent5.5 out of 10
Accumulated burden, weighted 17 percent2.6 out of 10
Exposure & support, weighted 13 percent6.3 out of 10
Course analysis
What shapes this race
Expect sustained upland ground and meaningful climbing, forest trail that may change character in wet conditions.
trailmountainforestmixed
Climbing density
36.6m per km
A more useful comparison than total ascent alone: it shows how consistently the course asks you to climb.
Cutoff analysis
Very high pressure
To finish inside 15h, the raw average required is 11:46 per kilometre (18:57 per mile), including every stop.
Raw pace11:46/km
PressureVery high 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
GPS required
The route is described as marked, but runners should still read the final race instructions.
Exposure & kit
extensive 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 Brecon to Cardiff Xtreme, your potential buffer and the biggest change in demand.
Practical detail
Support & logistics
Aid stations6 listed
Support levelaid stations
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 PartialThe organiser verifies 14 February 2027, 47.5 miles, approximately 2,800m, eleven summits, six checkpoints, self-navigation, 15 hours and £90. These Xtreme facts are not applied to the Classic family or 2026 history.
- 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.
Found something wrong?
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