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entries openGB Ultras
Ultra Wales 50
GB Ultras 50 Mile Series
Next edition: Saturday, 19 June 2027 – Sunday, 20 June 2027Coed-y-Brenin, Wales
A mountainous Welsh 50-miler where dense climbing, forest trail and technical ground exert far more influence than the headline distance alone suggests.
Official race site (opens in a new tab)
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Distance51 mi
Ascent2,898m*
Climb / km35.3m
Cutoff20h
Cutoff pace14:37/km
Technicality7.5/10
Entry£139
Formatcontinuous
Next edition
19 June 2027 – 20 June 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
2026 to Completed
These facts belong to the 2026 edition only. Missing values have not been copied from another year.
- Distance
- 80.47 km
- Ascent
- Not verified
- Cutoff
- Not published
- Entry
- Not verified
- Format
- Not published
- Stage layout
- Not applicable
Successful source check: 1 Sept 2026Source confidence: highThe official GB Ultras volunteer calendar verifies the Ultra Wales 50 Mile 2026 date and advertised distance. Edition-specific elevation, cutoff, price, support and route facts remain unknown rather than being copied from 2027.
Check Ultra Wales 50 2026 source (opens in a new tab)
Race For You difficulty
4.8/ 10
Moderate
High evidence confidence · 84% evidence coverage
This score is driven most by technical terrain. 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 percent4.1 out of 10
Climbing, weighted 25 percent5.3 out of 10
Technicality, weighted 15 percent7.5 out of 10
Accumulated burden, weighted 17 percent2.5 out of 10
Exposure & support, weighted 13 percent5.7 out of 10
Course analysis
What shapes this race
Expect sustained upland ground and meaningful climbing, sections where foot placement and downhill confidence matter, forest trail that may change character in wet conditions.
trailmountainforesttechnical
Climbing density
35.3m 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 20h, the raw average required is 14:37 per kilometre (23:32 per mile), including every stop.
Raw pace14:37/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?
Better suited to runners with prior ultra, mountain or technical-terrain experience than to somebody choosing their first ultra.
3.7/10 suitability
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
extensive kit
Some entrants may run into darkness depending on pace and start time. Prepare lighting even if your best-case plan finishes earlier.
Personal race predictor
Will you make the cutoff?
Use a previous result to estimate a realistic range for Ultra Wales 50, your potential buffer and the biggest change in demand.
Practical detail
Support & logistics
Aid stations6 listed
Support levelaid stations
LogisticsParking noted
LogisticsAccommodation nearby
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 official 2027 listing, detailed overnight schedule and registration verify the 19–20 June window, 51-mile/82.08K route, 20-hour cutoff, £139 and 500 places. The title and series card market 50 miles, while the vital statistics say 51; the detailed value is retained. The organiser still labels 2,898m TBC, so ascent remains approximate with Medium confidence.
- 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)Official source 4 (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.
Found something wrong?
Help keep this race accurate.
Wrong cutoff? Date changed? New course? Tell us what moved and include the official source if you have it.
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