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Snowdonia Trail Ultra Marathon Eryri
Next edition: Sunday, 11 July 2027Llanberis, Wales
A marked mountain loop from Llanberis through Eryri, with its cancelled 2026 running retained separately from the announced 2027 edition.
Official race site (opens in a new tab)
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Distance36 mi
Ascent2,286m
Climb / km39.4m
CutoffUnknown
Cutoff paceUnknown
TechnicalityUnknown
EntryFrom £96.99
FormatLooped
Next edition
11 July 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.
Cancelled editions
20262026 · Date TBCCancelled
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: 2 Sept 2026Source confidence: highThe organiser cancelled the 2026 event for heat and safety. Exact edition metrics are not copied from 2027, and no unverified original race date is stored.
Check Snowdonia Trail Ultra Marathon Eryri 2026 source (opens in a new tab)
Race For You difficulty
4/ 10
Moderate
Moderate evidence confidence · 57% evidence coverage
This score is driven most by balanced overall demands. 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 percent3.3 out of 10
Climbing, weighted 25 percent5 out of 10
Technicality, weighted 15 percent5.5 out of 10
Accumulated burden, weighted 17 percent2.1 out of 10
Exposure & support, weighted 13 percent4.3 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.
trailmountainforesttechnicalmixed
Climbing density
39.4m per km
A more useful comparison than total ascent alone: it shows how consistently the course asks you to climb.
Cutoff analysis
Unknown
The official overall cutoff has not yet been verified. Race For You will not estimate one.
Who this suits
First ultra?
There is not enough verified information to assess first-ultra suitability yet.
Navigation
fully marked
The route is described as marked, but runners should still read the final race instructions.
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
Will you make the cutoff?
Use a previous result to estimate a realistic range for Snowdonia Trail Ultra Marathon Eryri, your potential buffer and the biggest change in demand.
Practical detail
Support & logistics
Aid stations5 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 11 July 2027 58K/2,286m route and entry tier are announced. A usual start time, 18:15 finish and intermediate absolute deadlines are not converted into an overall cutoff.
- Successful source check
- 2 Sept 2026
- Catalogue record updated
- 2 Sept 2026
- Official source
- Available
Still unverified: cutoff.
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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