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By Gary Innes Last reviewed 22 June 2026

Graham · Luss Hills

Cruach an t-Sidhein

Cruach an t-Sidhein — the fairy hill — is the awkward western outlier of the Luss Grahams, the steep grassy group on the west side of Loch Lomond. It is a shapely hill in its own right, but its position tucked out beyond Doune Hill makes it the trickiest of the Luss tops to reach, which keeps it quiet. The reward is a clean view east over Loch Lomond to Ben Lomond and south down the Firth of Clyde.

Quick facts

Height
683.6m/ 2243ft
Distance
11 km
Ascent
720 m
Time
46 hrs
Difficulty
3 / 5Strenuous
Grid ref
NS275964
Nearest
Luss· Glasgow 44km
Dogs
Dogs on lead required near livestockDog-friendly guide ↗

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Standard route

open hillside 55% · steep grass 30% · bog 15%

11km · 720m ascent · 5 hrs

Most walkers take Cruach an t-Sidhein as the far point of a Luss Hills round, dropping west off Beinn Lochain to the intervening bealach and climbing the steep grassy east flank to the summit. Approached on its own it is a steep pull from Glen Luss or Glen Mollochan over rough, pathless grass. As an out-and-back outlier expect around 11km and 720m of ascent; allow 4–6 hours depending on how many of the neighbouring Grahams you take in.

Terrain

Predominantly steep grass, with no continuous path and a fair amount of rough, tussocky and boggy ground between the Luss tops. Straightforward going in dry weather but slippery and tiring when wet; the connecting bealachs add ascent on a multi-Graham round.

In winter

Low enough to be snow-free much of the winter, but the steep grass flanks become hard and slick under frost or old snow, when an axe and confidence on grass are worth having. Short daylight and the pathless ground make navigation the main concern in poor visibility.

This hill is in the Southern Highlands SAIS forecast area. Check SAIS forecasts in winter (December–April).

Best time of year

Best OK Avoid

Getting there

  • Glasgow1h 20m
  • Edinburgh2h 0m

OS maps: OS Explorer 364, OS Landranger 56

Mobile signal: Reasonable lower down near Loch Lomond; patchy on the western tops.

Current conditions

Daylight Today

19h 46mwalking daylight
Sunrise
04:32
Sunset
22:11
Civil dawn
03:28
Civil dusk
23:14

NOAA Solar Calculator · 23 June 2026

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Cruach an t-Sidhein — common questions

How hard is Cruach an t-Sidhein?
Cruach an t-Sidhein is rated 3/5 (moderately challenging) on the OutdoorSCOT scale. The standard route covers about 11km with 720m of ascent and takes most walkers 4-6 hours. Terrain: Predominantly steep grass, with no continuous path and a fair amount of rough, tussocky and boggy ground between the Luss tops.
When is the best time to climb Cruach an t-Sidhein?
The standard good-weather months for Cruach an t-Sidhein are April, May, June, September, October. 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 Cruach an t-Sidhein?
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 Cruach an t-Sidhein?
Reasonable lower down near Loch Lomond; patchy on the western tops.
Is Cruach an t-Sidhein safe in winter?
Low enough to be snow-free much of the winter, but the steep grass flanks become hard and slick under frost or old snow, when an axe and confidence on grass are worth having. Short daylight and the pathless ground make navigation the main concern in poor visibility.

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