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entries openGB Ultras
Yr Wyddfa Ultra 50
GB Ultras 50 Mile Series
Next edition: Saturday, 4 September 2027 – Sunday, 5 September 2027Betws-y-Coed, Wales
A high-mountain ultra from Betws-y-Coed through Eryri, taking in terrain around Tryfan, Yr Wyddfa, the Glyderau and Devil’s Kitchen before returning through lake and forest trails.
Race area · approximate race area. Approximate race area. Check the organiser’s website for the exact start and race-day directions.
Location evidence
Existing saved event-to-place evidence reused; geography query derived from 'Betws-y-Coed'. GeoNames exact settlement/suburb name match for 'Betws-y-Coed', country Wales, administrative area Conwy, region Wales; population 1200 (zero means unspecified). Representative event-area point, not a venue address, exact start or radius guarantee. Directional catalogue locations use the first disclosed event locality only as EVENT_AREA; other route endpoints are not substituted. Geographic lookup does not reverify dates or non-location facts. GeoNames (https://www.geonames.org/), CC BY 4.0; transformed to event-area coordinates with separate event-source evidence.
Location checked 2026-09-14.
Official race site (opens in a new tab)
Optional device-only history; never synced to your account. Shared-device users can leave it off.
Distance45 mi
AscentUnknown
Climb / kmUnknown
Cutoff20h
Cutoff pace16:34/km
Technicality8.2/10
Entry£139
FormatLooped
Next edition
4 September 2027 – 5 September 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 Past edition
These facts belong to the 2026 edition only. Missing values have not been copied from another year.
- Distance
- 72.42 km
- Ascent
- 2,800m
- Cutoff
- 20h
- Entry
- £119
- Format
- continuous · single stage · looped
- Stage layout
- Not applicable
Successful source check: 3 Sept 2026Source confidence: mediumThe official event-page vital statistics list 45 miles, 2,800m, a 20-hour cutoff, £119, 250 places and five checkpoints for 5 September 2026. The same page's prose says 3,254m and the series listing says 47 miles/3,254m; the vital-stat values are retained with Medium confidence and the disagreement is not hidden.
Check Yr Wyddfa Ultra 50 2026 source (opens in a new tab)
Race For You difficulty
5/ 10
Moderate
Limited input evidence · 51% evidence coverage
The main recorded demands are technical terrain, exposure and self-sufficiency. 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 percent3.7 out of 10
Climbing, weighted 25 percent5.5 out of 10
Technicality, weighted 15 percent8.2 out of 10
Accumulated burden, weighted 17 percent2.5 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, sections where foot placement and downhill confidence matter, forest trail that may change character in wet conditions.
trailmountainforesttechnical
Cutoff analysis
Lower pressure
To finish inside 20h, the raw average required is 16:34 per kilometre (26:40 per mile), including every stop.
Raw pace16:34/km
PressureLower 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?
This is not designed as a first-ultra recommendation. Significant endurance, navigation or mountain-race experience is strongly advised.
2.5/10 suitability
Navigation
self-navigation
Route-finding is part of the challenge. Carry the required mapping tools and be able to use them in darkness and poor visibility.
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
Aid stations5 listed
StartCae Llan / Village Green, Station Road, Betws-y-Coed, LL24 0AE
FinishCae Llan / Village Green, Station Road, Betws-y-Coed, LL24 0AE
Support levelunknown
LogisticsParking noted
LogisticsAccommodation nearby
LogisticsCrew access
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 PartialChecked 13 September 2026. Entry status: Open. Overall time limit: 20 hours. The official GB Ultras calendar confirms Yr Wyddfa Ultra 50 Mile for 4 September 2027. The overall cutoff above is explicitly published for 2027. Elevation, price, field and exact route facts are not carried forward from 2026. Other stored facts retain their previous source review from 2026-09-01. Field-scoped check 2026-09-28: Current edition page explicitly gives 2027 date and £139 entry fee. Current 2027 header explicitly says 45 miles (72.42 km rounded); name remains Yr Wyddfa Ultra 50. Do not carry the family brand 50 into measured course distance. Current official edition page publishes a standard entry amount rather than an unverified price. Only these facts were reviewed; other details retain their previous source dates. Field-scoped check 2026-10-20: 2027 page confirms 300 places, self-navigation, five checkpoints and the venue. Keep elevation unresolved: header says 2,800 m, narrative says 3,254 m and route note is explicitly 2026. Retain 45-mile course, £139 and 20-hour limit. No 2026 route version is represented as a 2027 update. Other facts retain their earlier field evidence.
- Successful source check
- 20 Oct 2026
- Catalogue record updated
- 20 Oct 2026
- Official source
- Available
Still unverified: elevation.
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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