Sgùrr a' Ghreadaidh & Sgùrr a' Mhadaidh route
A steep, dramatic Cuillin ascent via An Dorus from Glenbrittle, with scrambling to reach both Munro summits of Sgùrr a' Ghreadaidh and Sgùrr a' Mhadaidh.
Route outline
| Munros | ||||
| Ascent | 1450m (4750ft) | |||
| Distance | 10km (6m) | |||
| Time | 7:00hr* | |||
| Start/finish | Glenbrittle Youth Hostel, Isle of Skye Grid Ref : NG409225 | |||
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A good path follows the Allt a' Choire Ghreadaidh into a corrie before steep scree leads up to An Dorus (meaning 'The Door'). From here, a straightforward scramble leads to Sgùrr a' Mhadaidh, while a slightly more technical ascent gains the narrow summit of Sgùrr a' Ghreadaidh.
The route offers impressive views and a satisfying taste of Cuillin scrambling, with an optional continuation along the ridge for experienced climbers - brief details on this are mentioned below.
Ordnance Survey maps offer limited clarity for this rugged section of the Cuillin. Instead, the Harvey Superwalker map and the SMC's Scrambles in Skye guidebook are strongly recommended. For increased safety and enjoyment, a professional guide can be invaluable - The Highland Mountain Company provides guided days, 2-day ridge traverses, and 4-day Munro courses tailored to a range of experience levels.
Route description
1. Getting to Glenbrittle

Heading up the path towards Còir a' Ghreadaidh
This single-track road, with frequent passing places, crosses open moorland and forestry before descending into Glen Brittle. On the way it passes the Fairy Pools car-park and crosses the River Brittle before reaching the Glenbrittle Youth Hostel, where this route begins.
Limited parking is available opposite the hostel - if full, there is a rough area to park by the bridge over the River Brittle - avoid using passing places to park.
2. An Dorus

Approaching An Dorus
Around 2km after leaving the hostel, the path crosses the river
. Take care here - the rockbed can be slippery even in low water. It may be safer to cross slightly upstream.
Now on the north side of the burn, the path becomes less defined. It continues to climb gently, turning first north, then east, before crossing back over the river - now little more than a burn - and ascending over rocky ground into Coire an Dorus.
Leaving the grass-covered terrain behind, a faint path leads directly toward An Dorus - the dark, narrow gully between Sgùrr a' Mhadaidh and Sgùrr a' Ghreadaidh.

Above An Dorus, looking to Blaven
. True to its name - 'the door' - dramatic views open up to the east.
Above An Dorus, looking to Blaven
3. Sgùrr a' Mhadaidh

Scrambling up Sgùrr a' Mhadaidh with Sgùrr a' Ghreadaidh behind
Follow the twisting line north, then east, as it rises onto Sgùrr a' Mhadaidh's crest. The summit a short distance away.

On Sgùrr a' Mhadaidh looking over its tops towards the northern Cuillin peaks
offers an airy and scenic perch, with a fine outlook over the jagged ridge stretching over the mountain's other tops with the skyline of the northern Cuillin silhouetted behind.
On Sgùrr a' Mhadaidh looking over its tops towards the northern Cuillin peaks
4. Sgùrr a' Ghreadaidh

Looking to Sgùrr a' Ghreadaidh from Sgùrr a' Mhadaidh - look carefully and you'll see folk on An Dorus
via the route taken up.
From the top of An Dorus, the wall on the Sgùrr a' Ghreadaidh side is sheer and higher than that on the Sgùrr a' Mhadaidh side, with the route up being somewhat more tricky and exposed.
Begin the climb up toward Sgùrr a' Ghreadaidh by starting slightly to the right (west) of the top of An Dorus, then heading up the rock gradually angling leftwards. Though short, the scrambling here is exposed but generally with solid holds.
Above this, the route turns right and eases into airy ridge walking aiming southwards.
The dramatic Eag Dubh (Black Notch)
, a dark cleft on the Glenbrittle side, is passed - perhaps looking like a potential alternative ascent or descent route, I've never attempted to squeeze up or down it.
Passing Eag Dubh, continue over a slightly awkward slab above a stone-filled gully dropping to Loch Coruisk where some caution is required. Once past this, a straightfoward ridgewalk leads upwards.

Above 'The Wart' looking north
- a prominent overhanging rock feature - on the right (west), and continue up to the small cairn standing on Sgùrr a' Ghreadaidh's summit
. The views are outstanding northwards and southwards along the Cuillin Ridge.
Above 'The Wart' looking north
5. Return

Descending Sgùrr a' Ghreadaidh, Sgùrr a' Mhadaidh ahead
6. Continuing on the Cuillin Ridge
From Sgùrr a' Ghreadaidh, the ridge southward is narrow and sustained - over Sgùrr a' Ghreadaidh's southern top, the route drops, heads around the 'Three Teeth' and over Sgùrr Thormaid before climbing up Sgùrr na Banachdich's north-eastern arm. More details of continuing on this route can be found on the Cuillin South page.
GPX downloads and maps
Route profile
Weather forecasts
| Regional | MWIS - Northwest Highlands |
| Peak specific | Mountain Forecast.com Met Office YR.no |
| Seasonal | SAIS - Torridon Midge forecast |
Alternative and nearby routes
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|
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Sgùrr Alasdair via Great Stone Chute | |
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Sgùrr nan Eag & Sgùrr Dubh Mòr route | |
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* Times shown are estimates – see timing notes on the disclaimer page for more information.






