Loading Race For You
Loading page content.
entries openRat Race
The Isles Ultramarathon
Entry-open edition: Thursday, 16 September 2027 – Thursday, 23 September 2027Vatersay to the Butt of Lewis, Scotland
A six-stage, 300K northbound traverse of the Outer Hebrides from Vatersay to the Butt of Lewis, following the Hebridean Way through coastal, moorland and island terrain.
Official race site (opens in a new tab)
Optional device-only history; never synced to your account. Shared-device users can leave it off.
Distance186.4 mi
Ascent4,600m*
Climb / km15.3m
CutoffUnknown
Cutoff paceUnknown
Technicality6/10
Entry£2850
FormatPoint-to-point
Edition open for entry
16 September 2027 – 23 September 2027
This is the edition currently open for entry. An earlier confirmed running is listed in the archive because its entry status is different.
Edition archive
Expand an edition to inspect its year-specific facts. Other years never replace the primary edition facts.
Other announced editions
2026 to Sold out
These facts belong to the 2026 edition only. Missing values have not been copied from another year.
- Distance
- 300 km
- Ascent
- 4,600m approx.
- Cutoff
- Not published
- Entry
- £2,750
- Format
- multi stage · point to point
- Stage layout
- 6 stages · longest 59 km
Successful source check: 4 Sept 2026Source confidence: highThe official 2026 guide and event page verify the 17–24 September dates, sold-out status, 300K headline distance, six stages, GPX-led self-navigation and £2,750 price. Published stage distances total 296K and stage ascent totals approximately 4,600m; no single overall cutoff is stored because the organiser uses daylight and ferry-dependent daily controls.
Check The Isles Ultramarathon 2026 source (opens in a new tab)2028 to Registration open
These facts belong to the 2028 edition only. Missing values have not been copied from another year.
- Distance
- 300 km
- Ascent
- 4,600m approx.
- Cutoff
- Not published
- Entry
- £2,850
- Format
- multi stage · point to point
- Stage layout
- 6 stages · longest 59 km
Successful source check: 1 Sept 2026Source confidence: highThe official current page verifies the 14–21 September 2028 dates, 300K headline distance, six-stage itinerary and £2,850 price. Its published stage distances total 296K and stage ascent totals approximately 4,600m. Navigation and daily cutoffs remain unpublished for this edition.
Check The Isles Ultramarathon 2028 source (opens in a new tab)
Race For You difficulty
6.7/ 10
Hard
Moderate evidence confidence · 55% evidence coverage
This score is driven most by substantial race distance, accumulated fatigue and format burden, technical terrain. 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 percent8.7 out of 10
Climbing, weighted 25 percent5.2 out of 10
Technicality, weighted 15 percent6 out of 10
Accumulated burden, weighted 17 percent7.2 out of 10
Exposure & support, weighted 13 percent5.5 out of 10
Course analysis
What shapes this race
Expect sections where foot placement and downhill confidence matter, exposed moorland where weather can amplify the difficulty.
trailcoastalmoorlandroadmixedtechnical
Climbing density
15.3m per km
A more useful comparison than total ascent alone: it shows how consistently the course asks you to climb.
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.
2.5/10 suitability
Exposure & kit
extensive 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 The Isles Ultramarathon, your potential buffer and the biggest change in demand.
Practical detail
Support & logistics
Support levelfully supported
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 official current page verifies the 16–23 September 2027 dates, 300K headline distance, six-stage itinerary and £2,850 price. Its published stage distances total 296K and stage ascent totals approximately 4,600m. The future navigation method and daily cutoffs are not yet published and have not been carried forward from 2026.
- Successful source check
- 1 Sept 2026
- Catalogue record updated
- 1 Sept 2026
- Official source
- Available
Still unverified: cutoff.
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.