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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. 736 m summit, 14 km out-and-back from Portree, 800 m of ascent. Skye and Small Isles.

Quick facts

Height
737.2m/ 2419ft
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 ↗

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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 31mwalking daylight
Sunrise
04:39
Sunset
22:05
Civil dawn
03:37
Civil dusk
23:08

NOAA Solar Calculator · 31 May 2026

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Marsco — common questions

How hard is Marsco?
Marsco is rated 3/5 (moderately challenging) on the OutdoorSCOT scale. The standard route covers about 14km with 800m of ascent and takes most walkers 4-6 hours. Terrain: Boggy approach on the Glen Sligachan path.
Where do I park for 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 is the best time to 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?
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 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.