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Marsco
Photo: Steven Brown / CC BY-SA 2.0 via Geograph
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Graham · Skye & The Small Isles

Marsco

The big rounded pyramid that closes the head of Glen Sligachan, sitting between the Black and Red Cuillin. A brilliant solo Graham day from the Sligachan Hotel. 737 m summit, 14 km out-and-back from Portree, 800 m of ascent. Skye and Small Isles.

Quick facts

Height
737.2m/ 2419ft
Prominence
414 m
Distance
14 km
Ascent
800 m
Time
46 hrs
Difficulty
3 / 5Strenuous
Grid ref
NG507251
Parking
NG486300
Nearest
Portree
Dogs
Dogs on lead required near livestockDog-friendly guide ↗

Height and prominence cross-checked against the Database of British and Irish Hills (CC BY).

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Standard route

glen path 20% · rough heather 30% · rocky slope 35% · summit dome 15%

14km · 800m ascent · 6 hrs

Long path walk from Sligachan into Glen Sligachan, then a steep direct ascent up the west flank. Pathless on the upper slopes but navigation is straightforward in clear weather.

Terrain

Boggy approach on the Glen Sligachan path. Steep, scree-strewn upper slopes. No scrambling.

In winter

Skye winter weather is brutal — Atlantic gales and driving sleet rather than alpine cold.

Best time of year

Best OK Avoid

Getting there

  • Glasgow5h 20m
  • Edinburgh5h 20m
Parking: NG486300IV47 8SW

OS maps: OS Explorer 411

Mobile signal: Brief signal on Skye near Sligachan; 1 bar on the summit

Current conditions

Daylight Today

19h 30mwalking daylight
Sunrise
04:47
Sunset
22:13
Civil dawn
03:45
Civil dusk
23:15

NOAA Solar Calculator · 13 July 2026

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Marsco — common questions

How hard is Marsco?
We grade Marsco at 3/5, which puts it in moderately challenging territory. The usual route is around 14km with 800m of climbing; allow 4-6 hours. Terrain: Boggy approach on the Glen Sligachan path.
How prominent is Marsco?
Marsco has 414m of topographic prominence — the height of its summit above the highest col connecting it to higher ground.
Where should I park to climb Marsco?
Standard parking is at NG486300 near Portree. Check the parking grid reference on an OS map before travel; informal laybys can fill on summer weekends.
When should I climb Marsco?
The standard good-weather months for Marsco 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 Marsco?
On a lead only — the route crosses ground with livestock or nesting-bird interest.
What's mobile reception like on Marsco?
Brief signal on Skye near Sligachan; 1 bar on the summit
Is Marsco safe in winter?
Skye winter weather is brutal — Atlantic gales and driving sleet rather than alpine cold.

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