Mullach Buidhe
Get ready for a most enjoyable hike around the Pirnmill Hills, including Mullach Buidhe, the Gaelic name for Yellow Peak, on the west side of the island of Arran. These mountains, less frequented and more rounded in relief than those on the east side of the island, offer a haven of peace for those seeking tranquility. What's more, the views from these peaks are just as magnificent.
The trail is excellent at the beginning and end, but becomes progressively less and less visible as you gain altitude. You then go off trail onto a wide grassy ridge. There may be a few tricky stretches before you reach the summit, but these can be avoided by taking a bypass route. This hike promises a total immersion in the wilderness of the Isle of Arran, far off the beaten track, with beautiful panoramas to reward your efforts.
More details on the hike
Park in the charming coastal hamlet of Pirnmill, where your adventure begins. The hike starts on a track before quickly turning onto a path that winds through birch forest. The trail follows the Allt Gobhlach stream to a magnificent waterfall. You then reach a slightly marshy plateau where the trail becomes less obvious. However, the summit of Mullach Buidhe and its two ridges will be visible. Head towards the left ridge to continue.
The slope becomes steeper and steeper, then rocky at the top of the ridge. You can follow the ridge to the summit, but this will require some scrambling. For a more accessible alternative, take the bypass trail on the west side of the mountain before reaching the last rocky ledge. From here, an easy climb up a grassy slope leads to the summit of Mullach Buidhe (721 m).
For the return journey, follow the ridge. Descend to the pass to the east, then make a short ascent to the summit of Beinn Bhreac (711 m). You'll then find a path that descends without difficulty to the magnificent Coire Fhionn lake. Finally, follow the road south for just over two kilometers back to your starting point.
➡️ Hiking parameters
➡️ Hiking parameters
➡️ Hiking parameters

More details on the hike
Park in the charming coastal hamlet of Pirnmill, where your adventure begins. The hike starts on a track before quickly turning onto a path that winds through birch forest. The trail follows the Allt Gobhlach stream to a magnificent waterfall. You then reach a slightly marshy plateau where the trail becomes less obvious. However, the summit of Mullach Buidhe and its two ridges will be visible. Head towards the left ridge to continue.
The slope becomes steeper and steeper, then rocky at the top of the ridge. You can follow the ridge to the summit, but this will require some scrambling. For a more accessible alternative, take the bypass trail on the west side of the mountain before reaching the last rocky ledge. From here, an easy climb up a grassy slope leads to the summit of Mullach Buidhe (721 m).
For the return journey, follow the ridge. Descend to the pass to the east, then make a short ascent to the summit of Beinn Bhreac (711 m). You'll then find a path that descends without difficulty to the magnificent Coire Fhionn lake. Finally, follow the road south for just over two kilometers back to your starting point.
Slideshow
Nearby hikes

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- Duration : 6 h
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- Elevation gain : 830 m

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Skipness Castle
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Beinn Tarsuinn
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Hikes to discover
Let chance guide your steps: Each time you visit Horizonrando, you will discover a new selection of hikes in Scotland, chosen at random.

Blà Bheinn
- Difficulty : Hard
- Duration : 5 h
- Distance : 8.2 km
- Elevation gain : 940 m

Old Man of Stoer
- Difficulty : Easy
- Duration : 3 h 15 m
- Distance : 7.1 km
- Elevation gain : 280 m

Lochnagar
- Difficulty : Hard
- Duration : 7 h 30 m
- Distance : 19.7 km
- Elevation gain : 980 m

Faraid Head
- Difficulty : Easy
- Duration : 2 h 30 m
- Distance : 6.9 km
- Elevation gain : 130 m

Preshal Hills
- Difficulty : Hard
- Duration : 5 h
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- Elevation gain : 610 m

Uath Lochans
- Difficulty : Easy
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- Elevation gain : 120 m






















