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next edition · date TBCBreaking Strain
Run the Borders 109K
Run the Borders series
Next edition: 2027 · Date TBCMelrose, Scotland
A clockwise circuit of the Borders Abbeys Way from Melrose, visiting the four ruined abbeys and the region's historic towns on riverbank, farm track, trail and road.
Official race site (opens in a new tab)
Optional device-only history; never synced to your account. Shared-device users can leave it off.
Distance67.7 mi
Ascent1,900m*
Climb / km17.4m
Cutoff20h
Cutoff pace11:01/km
Technicality3.8/10
Entry£110
FormatLooped
Next edition
2027 · Date TBC
The organiser has confirmed a 2027 edition but has not yet published a date. It will not appear in precise month or date searches until that date is confirmed.
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
5.1/ 10
Moderate
High evidence confidence · 89% evidence coverage
This score is driven most by balanced overall demands. Difficulty V2's separate time-limit modifier adds 0.15 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 percent5.3 out of 10
Climbing, weighted 25 percent3.7 out of 10
Technicality, weighted 15 percent3.8 out of 10
Accumulated burden, weighted 17 percent4.2 out of 10
Exposure & support, weighted 13 percent5.1 out of 10
Course analysis
What shapes this race
Expect largely runnable, non-technical surfaces.
trailroadmixednon-technical
Climbing density
17.4m per km
A more useful comparison than total ascent alone: it shows how consistently the course asks you to climb.
Cutoff analysis
High pressure
To finish inside 20h, the raw average required is 11:01 per kilometre (17:44 per mile), including every stop.
Raw pace11:01/km
PressureHigh 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?
A realistic target for a prepared runner with some trail or ultra experience, but not the softest possible introduction to the distance.
5.7/10 suitability
Navigation
fully marked
The route is described as marked, but runners should still read the final race instructions.
Exposure & kit
moderate kit
Significant overnight running is likely for many entrants. Lighting, temperature management and sleep strategy can materially affect the outcome.
Personal race predictor
Will you make the cutoff?
Use a previous result to estimate a realistic range for Run the Borders 109K, your potential buffer and the biggest change in demand.
Practical detail
Support & logistics
Aid stations12 listed
Support levelaid stations
LogisticsParking noted
LogisticsPublic transport possible
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 organiser marks the 2027 date TBC while separate sections print provisional 21 August and 21–22 August windows, so no exact date or open-registration state is stored. The marketed 109K, alternate 108km wording, approximate ascent, 20-hour cutoff and full price are retained transparently.
- Successful source check
- 2 Sept 2026
- Catalogue record updated
- 2 Sept 2026
- Official source
- Available
Still unverified: date.
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.
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