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date confirmedLothian Running Club
Shale Trail 50K Ultra
Next edition: Sunday, 6 December 2026Winchburgh to West Calder and return, Scotland
A small club-organised 50K formed by an out-and-back double of West Lothian’s waymarked Shale Trail between Winchburgh and West Calder.
Official race site (opens in a new tab)
Optional device-only history; never synced to your account. Shared-device users can leave it off.
Distance31.1 mi
AscentUnknown
Climb / kmUnknown
Cutoff8h
Cutoff pace9:36/km
Technicality2.4/10
EntryNot verified
Formatcontinuous
Next edition
6 December 2026
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
2025Completed
These facts belong to the 2025 edition only. Missing values have not been copied from another year.
- Distance
- 50 km
- Ascent
- Not verified
- Cutoff
- 8h
- Entry
- Not verified
- Format
- continuous · single stage · out and back
- Stage layout
- Not applicable
Successful source check: 2 Sept 2026Source confidence: highThe Lothian Running Club page verifies the completed 7 December 2025 event, a 50km-or-thereby out-and-back and the 07:00-to-15:00 eight-hour limit. Aggregate ascent and price remain unknown; later edition facts are not copied backward.
Check Shale Trail 50K Ultra 2025 source (opens in a new tab)
Race For You difficulty
3.8/ 10
Moderate
Moderate evidence confidence · 69% evidence coverage
This score is driven most by balanced overall demands. 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 out of 10
Climbing, weighted 25 percent5.5 out of 10
Technicality, weighted 15 percent2.4 out of 10
Accumulated burden, weighted 17 percent1.6 out of 10
Exposure & support, weighted 13 percent4.3 out of 10
Course analysis
What shapes this race
Expect largely runnable, non-technical surfaces.
trailmixednon-technical
Cutoff analysis
Very high pressure
To finish inside 8h, the raw average required is 9:36 per kilometre (15:26 per mile), including every stop.
Raw pace9:36/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.
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?
One of the more approachable options in its distance bracket, provided you prepare for the full distance and practise the required kit and pacing.
7.3/10 suitability
Navigation
fully marked
The route is described as marked, but runners should still read the final race instructions.
Exposure & kit
moderate 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
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.
Latest verification
Trust the source, see the gaps.
Data PartialThe entry page's primary event header gives Sunday 6 December 2026 and says entries will open in September; no ticket option was live at the audit date, so registration remains not open. Its body mistakenly says Sunday 7 December, which is a Monday. The calendar-valid header date is retained with the copy conflict explicit. The page verifies a 07:00 start, 15:00 finish limit and 50K route; ascent and price remain unknown.
- Successful source check
- 2 Sept 2026
- Catalogue record updated
- 2 Sept 2026
- Official source
- Available
Still unverified: elevation, entry price.
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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