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.

By Gary

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: 4–6 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.

Outside the SAIS network. No Scottish Avalanche Information Service forecast covers Marsco. SAIS forecasts six areas only — Northern and Southern Cairngorms, Creag Meagaidh, Lochaber, Glencoe and Torridon — and this hill is outside all of them, so there is no avalanche forecast to read for it. In winter, use MWIS The Northwest Highlands ↗ for mountain weather, judge snow stability from first principles, and treat any cornice or wind-loaded slope with extra caution.

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

14h 50mwalking daylight

Sunrise: 06:38
Sunset: 20:08
Civil dawn: 05:58
Civil dusk: 20:48

NOAA Solar Calculator · 7 September 2026

Pair with

Curated multi-hill combinations from Marsco.

Two-hill day
Marsco + Glamaig - Sgurr Mhairi
Link Marsco with Glamaig for a full Sligachan Red Cuillin double above Glen Sligachan
18km · 1500m ascent · 9 hrs

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Around Marsco on the SCOT network

Getting there, basing yourself, and what to do off the hill.

On TripSCOT

station

Getting there: Kyle of Lochalsh station

Skye Bridge; Five Sisters of Kintail; Glen Shiel; Plockton

25km from the hill

tripscot.co.uk

On TripSCOT

town

Base yourself in Portree

Main Skye base — Cuillin, Trotternish, Storr

19km from the hill

tripscot.co.uk

On TasteSCOT

distillery

After the hill: Isle of Raasay Distillery

Raasay — new island distillery with rooms; Dun Caan walks from the door

12km from the hill

tastescot.co.uk

Before you go

Hillwalking carries real risk and the responsibility for any day on the hill is yours. Conditions in Scotland change fast and can differ sharply from the forecast — check the weather and the ground before you commit, turn back when the day stops working, and carry map and compass with the ability to use them rather than relying on a phone.

The distance, ascent and time shown on this page are editorial estimates for the usual line, not measurements from a recorded track — that is what the ~ means. Treat them as a rough shape of the day. Your own pace, the conditions and the exact line you take will all move them.

Mountain forecasts: MWIS and the Met Office mountain forecast. Access rights and responsibilities are set out in the Scottish Outdoor Access Code.

We check what we publish, but we cannot check the route on the day you walk it. Nothing here is a substitute for your own judgement.

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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