Loading Race For You
Loading page content.
entries closedRun Walk Crawl
Celtic Trail Ultra
Next edition: Saturday, 12 December 2026Dare Valley Country Park, Aberdare, Wales
A winter trail ultra from Dare Valley Country Park using the Celtic Trail and surrounding upland paths.
Start · approximate postcode area. Approximate race area. Check the organiser’s website for the exact start and race-day directions.
Location evidence
Current 12 December 2026 organiser page names ultra start at Dare Valley Country Park and visitor-centre postcode CF44 7RG. URL is old, page explicitly shows 2026 current edition. Half marathon starts Resolven Rugby Club; do not propagate this point to half or use Aberdare parking-only CF44 7HU as race start. Postcodes.io postcode centroid: approximate postcode location, not exact start. Apply only to listed editions where applicability is explicitly bounded.
Event/venue postcode: CF44 7RG
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.
Distance34 mi
Ascent1,783m*
Climb / km32.6m
Cutoff10h
Cutoff pace10:58/km
TechnicalityUnknown
Entry£62
FormatLooped
Next edition
12 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
This is the only edition currently stored for this race family. Earlier verified editions can be added without changing the permanent race URL.
Check the official race source (opens in a new tab)Race For You difficulty
4.1/ 10
Moderate
Moderate input evidence · 62% evidence coverage
The main recorded demands are balanced overall demands. 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 0.35 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. 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 percent3.2 out of 10
Climbing, weighted 25 percent4.3 out of 10
Technicality, weighted 15 percent5.5 out of 10
Accumulated burden, weighted 17 percent2 out of 10
Exposure & support, weighted 13 percent4.3 out of 10
Course analysis
What shapes this race
Expect forest trail that may change character in wet conditions.
trailforestmixed
Climbing density
32.6m per km
A more useful comparison than total ascent alone: it shows how consistently the course asks you to climb.
Cutoff analysis
Very high pressure
To finish inside 10h, the raw average required is 10:58 per kilometre (17:39 per mile), including every stop.
Raw pace10:58/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.
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 Celtic Trail Ultra, your potential buffer and the biggest change in demand.
Practical detail
Support & logistics
Aid stations7 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 current page and entry verify 12 December 2026, 34 miles, 5,850ft, seven checkpoints, 10 hours and £62 despite the stale 2024 URL slug. The detailed 34-mile figure is displayed alongside the 50K search alias. Entry availability checked 28 September 2026: SI Entries states new entries closed on 16 September 2026 at 08:00. The event remains scheduled; closure is not cancellation evidence. Field-scoped check 2026-09-28: Official edition-specific SI Entries explicitly states new entries closed on 16 September 2026 at 08:00. The scheduled event remains future; the verified closure affects entry availability, not occurrence or cancellation. Only these facts were reviewed; other details retain their previous source dates.
- Successful source check
- 3 Sept 2026
- Catalogue record updated
- 28 Sept 2026
- Official source
- Available
Elevation is approximate or awaiting final confirmation.
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.
Report an updateKeep exploring
Browse the race catalogue
Use explicit distance, place, date, terrain and format filters to compare current races.