Marilyn · islands
Beinn Mhor
Beinn Mhor — simply the Big Hill in Gaelic — is the dominant summit of the Pairc peninsula in south Lewis, rising to 572m above the deer-haunted glens of the Park forest. It is one of the most isolated Marilyns in Britain, ringed by trackless gneiss country and sea lochs on three sides.
Gaelic: “mountain, peak, big” · Pronunciation: bine vore
Quick facts
- Height
- 572m/ 1876ft
- Grid ref
- NB 25439 09529
- Dogs
- Dogs on lead required near livestockDog-friendly guide ↗
No GPX track yet
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Standard route
Lewisian gneiss 45% · blanket bog 35% · rough grassland 20%
Long walk-ins of 20km or more are typical, usually from Cleitir on the south or from the lonely B8060 north of Eishken. Expect 8-10 hours on the round, with the final ascent up steep grass and boulders to a small summit cairn.
Terrain
Ancient Lewisian gneiss outcrops, peat hags, deer-cropped grass and boulder fields. There are no paths or tracks across the main approach country. Stalking activity occurs in autumn — check before visiting.
In winter
Remote even in summer, the Pairc becomes seriously committing in winter. Snow can lie on the upper slabs and the long return after dark in poor weather is hazardous; treat as a full expedition.
Best time of year
Getting there
- Glasgow8h 18m
- Edinburgh10h 23m
OS maps: OS Landranger 13, OS Landranger 14, OS Explorer 457
Mobile signal: Poor. Remote Lewis/Harris; limited coverage.
Current conditions
Daylight Today
- Sunrise
- 05:03
- Sunset
- 21:43
- Civil dawn
- 04:07
- Civil dusk
- 22:39
NOAA Solar Calculator · 15 May 2026