Map & Elevation
About this Route
This GPX takes the direct route up Clisham from the A859 beside Abhainn Mharaig and returns the same way. It covers 5.9 km with around 758 m of recorded ascent. That figure is high for the route but reflects the steep, uneven track; allow 3½ to 4½ hours rather than judging the day by distance alone.
From the roadside parking area north of Tarbert, follow the river briefly and strike uphill on the broad lower slope. The first section is notoriously wet and there is no continuous path, so use the GPX and aim for firmer ground without wandering too far from the line. The gradient builds steadily. Higher up, a clearer path threads through grass, stones and boulder fields towards the summit ridge. The final approach reaches the large stone shelter surrounding Clisham's trig point at 799 m, the highest summit in the Outer Hebrides.
Descend by the same route, taking extra care on the loose upper ground and wet lower slopes. This is the direct ascent, not the longer Clisham horseshoe. The mountain is exposed to Atlantic weather and can disappear into cloud quickly. There are few reliable landmarks on the lower section, while mist can make the broad upper slope difficult to read. Carry waterproofs, spare warm clothing, a map and compass, and leave the summit on a checked bearing.
The approach is boggy and the ascent steep; there is no path at first.
Walkhighlands
Route Waypoints
Start from the small roadside parking area north of Tarbert. Park fully off the carriageway and avoid blocking access.
Follow the lower ground beside the river briefly, then turn uphill with the GPX. Choose crossings and wet patches carefully.
Climb over boggy grass with only faint trods. Keep checking your line back towards the road for the descent.
The gradient increases as the slope narrows. Aim for firm turf and avoid eroded channels that may be slippery.
Pick up the clearer mountain path weaving through stones. In mist, confirm it is continuing towards Clisham rather than traversing away.
Follow the worn line through rough blocks below the summit. Slow down and test loose stones before committing weight.
Reach the trig point inside the large circular shelter cairn at 799 m. Take a bearing before beginning the descent.
Retrace the upper path and pathless lower slope to the roadside start. Traffic can be fast, so take care at the verge.
Essential Tips
The lower slope is wet even after settled weather. Waterproof boots and gaiters make the direct ascent far more comfortable.
The parking area is small and hard to spot from above. Save its position and note a bearing before climbing.
The GPX records about 758 m of climbing, more than the simple height difference. Use the route time and terrain, not ascent alone, to plan.
Wind and cloud arrive quickly on Harris. Turn back if you cannot hold a safe bearing on the broad upper slope.
Frequently Asked Questions
How long does it take to climb Clisham?
Allow 3½ to 4½ hours for the round trip. The route is only 6 km, but the steep, uneven terrain and boggy lower slopes make it slower than the distance suggests.
Is there a path up Clisham?
Not at first. The lower section is pathless and boggy with only faint tracks, but higher up you'll pick up a clearer mountain path that leads through boulders to the summit.
How high is Clisham?
799 metres. It's the highest summit in the Outer Hebrides, with a trig point inside a large circular stone shelter at the top.