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last completed editionUTMB Group / Eryri by UTMB
Eryri 50K
Eryri by UTMB series
Last completed: Saturday, 16 May 2026Llanberis, Wales
Eryri 50K is a technical mountain race in Eryri, retaining the permanent identity of the former Ultra-Trail Snowdonia 50K product.
Official race site (opens in a new tab)
Optional device-only history; never synced to your account. Shared-device users can leave it off.
Distance34.8 mi
Ascent3,400m*
Climb / km60.7m
Cutoff14h
Cutoff pace15:00/km
TechnicalityUnknown
EntryFrom £149
FormatLooped
Last completed edition
16 May 2026
Next edition not yet announced
The organiser has not yet published a confirmed future edition in our sources. The facts below describe the 2026 running and are retained for comparison and runner history.
Edition archive
Expand an edition to inspect its year-specific facts. Other years never replace the primary edition facts.
Past editions
2025Completed
These facts belong to the 2025 edition only. Missing values have not been copied from another year.
- Distance
- 57.7 km
- Ascent
- 3,370m
- Cutoff
- Not published
- Entry
- Not verified
- Format
- continuous · single stage · looped
- Stage layout
- Not applicable
Successful source check: 2 Sept 2026Source confidence: highCompleted Ultra-Trail Snowdonia 50K history. Cutoff, price and finish time remain unknown rather than inherited.
Check Eryri 50K 2025 source (opens in a new tab)
Race For You difficulty
4.6/ 10
Moderate
Limited evidence confidence · 50% evidence coverage
This score is driven most by high climbing demand. Difficulty V2's separate time-limit modifier adds 0.15 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 percent3.2 out of 10
Climbing, weighted 25 percent6.5 out of 10
Technicality, weighted 15 percent5.5 out of 10
Accumulated burden, weighted 17 percent2.1 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, sections where foot placement and downhill confidence matter.
trailmountainfelltechnical
Climbing density
60.7m per km
A more useful comparison than total ascent alone: it shows how consistently the course asks you to climb.
Cutoff analysis
High pressure
To finish inside 14h, the raw average required is 15:00 per kilometre (24:08 per mile), including every stop.
Raw pace15:00/km
PressureHigh 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.
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
Support levelunknown
UTMB50K
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 published 14-hour limit is retained. Wave starts and the 23:00 course close imply 14–14.5 hours, while headline and embedded course metrics also differ; no false precision replaces the published value.
- Successful source check
- 2 Sept 2026
- Catalogue record updated
- 2 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.
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