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entries openBrathay Trust / Brathay Challenges
Brathay 10in10
Next edition: Friday, 14 May 2027 – Sunday, 23 May 2027Brathay Hall, Ambleside, England
Ten full Windermere road marathons on ten consecutive days, with runners returning to Brathay Hall after every stage.
Official race site (opens in a new tab)
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Distance262.2 mi
AscentUnknown
Climb / kmUnknown
CutoffUnknown
Cutoff paceUnknown
Technicality2/10
EntryNot verified
FormatLooped
Next edition
14 May 2027 – 23 May 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
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
6.2/ 10
Hard
Moderate evidence confidence · 59% evidence coverage
This score is driven most by substantial race distance, accumulated fatigue and format burden. 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 percent9.6 out of 10
Climbing, weighted 25 percent5.5 out of 10
Technicality, weighted 15 percent2 out of 10
Accumulated burden, weighted 17 percent8.2 out of 10
Exposure & support, weighted 13 percent2.3 out of 10
Course analysis
What shapes this race
The course combines road, mixed terrain.
roadmixed
Cutoff analysis
Unknown
The official overall cutoff has not yet been verified. Race For You will not estimate one.
Who this suits
First ultra?
This is not designed as a first-ultra recommendation. Significant endurance, navigation or mountain-race experience is strongly advised.
1.2/10 suitability
Navigation
fully marked
The route is described as marked, but runners should still read the final race instructions.
Exposure & kit
light kit
Night running is not expected for most entrants based on the current format, but final kit rules still take priority.
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 levelfully supported
LogisticsAccommodation nearby
LogisticsBag drop
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 official page confirms a 10:30 start on 14 May 2027 and ten full Windermere marathons over ten days. The total is the sum of ten standard marathon stages; stage ascent and cutoffs remain unknown and the event is not treated like a continuous 422K race.
- Successful source check
- 2 Sept 2026
- Catalogue record updated
- 2 Sept 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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