Munro · North-West Highlands
Ruadh Stac Mor
Ruadh Stac Mor (918m) — "big red stack" — is the striking red Torridonian sandstone summit at the heart of the Fisherfield Forest, the largest stretch of pathless wilderness in Britain. The mountain looks across to A' Mhaighdean and is the most northerly of the Fisherfield Six. Its remoteness and the long approach mean it is rarely climbed without an overnight stop at Carnmore or Shenavall.
Gaelic: “red, big” · Pronunciation: roo-ah stac more
Quick facts
- Height
- 918.7m/ 3014ft
- Distance
- 16 km
- Ascent
- 808 m
- Time
- 6–9 hrs
- Grid ref
- NH018756
- Parking
- NH114851
- Nearest
- Ullapool· Inverness 71km
- Dogs
- Dogs on lead required near livestockDog-friendly guide ↗
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Standard route
Remote approach track 45% · Open hillside 30% · Sandstone summit 25%
The classic approach is from Corrie Hallie on the A832 east of Dundonnell, walking 12km via Shenavall bothy and the Abhainn Strath na Sealga river crossing. Climb south-west onto the bealach with A' Mhaighdean, then turn north-west up the steep red sandstone screes to the summit. Most parties combine with A' Mhaighdean as a two-day trip. Around 32km with 1500m of ascent.
Terrain
The Shenavall path is well-trodden but boggy. River crossings of the Abhainn Strath na Sealga and Abhainn Gleann na Muice can be impassable in spate. The summit cone is rough red sandstone scree — slippery in the wet. The summit itself is a small rocky outcrop with views over the Fisherfield wilderness.
In winter
A genuinely committing winter expedition. River crossings frequently impossible in winter spate. SAIS Northern Highlands provides forecasts. Shenavall bothy is the only reasonable winter base. No phone reception anywhere in Fisherfield. Daylight under seven hours requires precise route planning and emergency bivvy gear.
This hill is in the Torridon SAIS forecast area. Check SAIS forecasts in winter (December–April).
Best time of year
Getting there
- Glasgow4h 11m
- Edinburgh5h 33m
OS maps: OS Landranger 19
Mobile signal: No signal. Part of the remote Fisherfield group — no coverage anywhere on the approach or summit.
Current conditions
Daylight Today
- Sunrise
- 04:25
- Sunset
- 22:16
- Civil dawn
- 03:16
- Civil dusk
- 23:25
NOAA Solar Calculator · 7 June 2026
Pair with
Curated multi-hill combinations from Ruadh Stac Mor.
Around Ruadh Stac Mor on the SCOT network
Getting there, basing yourself, and what to do off the hill.
Ruadh Stac Mor — common questions
- How hard is Ruadh Stac Mor?
- Ruadh Stac Mor is rated 5/5 (very challenging) on the OutdoorSCOT scale. The standard route covers about 16km with 808m of ascent and takes most walkers 6-9 hours. Terrain: The Shenavall path is well-trodden but boggy.
- Where do I park for Ruadh Stac Mor?
- Standard parking is at NH114851 near Ullapool. Check the parking grid reference on an OS map before travel; informal laybys can fill on summer weekends.
- When is the best time to climb Ruadh Stac Mor?
- The standard good-weather months for Ruadh Stac Mor are May, June, July, August, September. Outside those months, expect winter conditions on the high ground — full mountain kit, navigation skills, and a check of the SAIS avalanche forecast for the relevant region.
- Can I bring my dog up Ruadh Stac Mor?
- Yes, but dogs must be kept on a lead — there is livestock or ground-nesting bird interest on the route.
- Is there mobile signal on Ruadh Stac Mor?
- No signal. Part of the remote Fisherfield group — no coverage anywhere on the approach or summit.
- Is Ruadh Stac Mor safe in winter?
- A genuinely committing winter expedition. River crossings frequently impossible in winter spate. SAIS Northern Highlands provides forecasts. Shenavall bothy is the only reasonable winter base. No phone reception anywhere in Fisherfield. Daylight under seven hours requires precise route planning and emergency bivvy gear.
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