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entries openUltra X
Dragon’s Tail
Dragon’s Back Race
Next edition: Friday, 10 September 2027 – Saturday, 11 September 2027Black Mountain to Cardiff Castle, Wales
A two-day stage race from the Black Mountain and Bannau Brycheiniog to Cardiff Castle.
Official race site (opens in a new tab)
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Distance85.1 mi
AscentUnknown
Climb / kmUnknown
CutoffUnknown
Cutoff paceUnknown
TechnicalityUnknown
EntryNot verified
Formatmulti-stage
Next edition
10 September 2027 – 11 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
- 137 km
- Ascent
- 4,500m
- Cutoff
- 32h
- Entry
- £559
- Format
- multi stage · point to point
- Stage layout
- 2 stages · longest 72 km
Successful source check: 3 Sept 2026Source confidence: highChecked 13 September 2026. Entry status: Closed. The official page verifies the inaugural 11–12 September 2026 two-stage product, 72K/3,200m and 65K/1,300m stages, £559 and a 22:00 closure each day. The stored 32 hours is the sum of two active 16-hour stage windows, not elapsed weekend time. A 06:30 mass-start FAQ conflicts with the provisional 06:00–09:00 timetable and is retained in this note. Other stored facts retain their previous source review from 2026-09-03.
Check Dragon’s Tail 2026 source (opens in a new tab)
Race For You difficulty
5.5/ 10
Hard
Limited input evidence · 20% evidence coverage
The main recorded demands are substantial race distance. 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 percent6.1 out of 10
Climbing, weighted 25 percent5.5 out of 10
Technicality, weighted 15 percent5.5 out of 10
Accumulated burden, weighted 17 percent4.3 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, exposed moorland where weather can amplify the difficulty.
trailmountainmoorlandmixed
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.
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.
Latest verification
Trust the source, see the gaps.
Data PartialOfficial Dragons Tail confirms 10–11 September 2027. Header and price-block opening times conflict as with Fire; booking status/price unresolved. Only explicitly sourced new-edition facts are populated. Prior-edition route, price, entry status and participation details have not been inherited. Field-scoped review 2026-10-28: The specific two-day Dragon’s Tail page confirms 10–11 September 2027 and says 2027 entries now open. Other facts retain their earlier verification dates.
- Successful source check
- 28 Sept 2026
- Catalogue record updated
- 28 Oct 2026
- Official source
- Available
Still unverified: elevation, cutoff, 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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