Aonach Mor, Aonach Beag and Coire nan Laogh Loop

This is a big, serious mountain circuit in the Ben Nevis range above Fort William, taking in Aonach Mòr, Aonach Beag, and the broad upper ground around Coire nan Laogh. At roughly 16 km / 10 miles with around 1,200 metres / 3,940 feet of ascent, it is a difficult day that combines long, sustained climbing with exposed high-level terrain, rough stony sections, and navigation that becomes much more committing in mist. The usual practical start point is Nevis Range Mountain Resort, Torlundy, Fort William, PH33 6SQ, on the A82 about 7 miles / 11 km north of Fort William. Nevis Range notes that older sat-nav data can send drivers to the wrong small forest car park, so the signed resort entrance is the one to follow. (nevisrange.co.uk)

From the lower slopes, the route rises out of the managed ski and forest access area and quickly feels much wilder. Aonach Mòr stands at about 1,221 metres / 4,006 feet and Aonach Beag at about 1,234 metres / 4,049 feet, making them two of the highest mountains in Scotland and among the loftiest summits in Britain outside the Cairngorms. The scale of the day is not just in the ascent figures but in the character of the terrain: broad plateaus, steep linking descents, boulder-strewn ground, and long stretches where the line of travel is not always obvious if cloud drops in. (en.wikipedia.org)

Getting to the start

By car, head for Nevis Range Mountain Resort near Torlundy, Fort William, using the signed access road from the A82. Nevis Range describes the access road as a wide, good-quality road and specifically warns that if you find yourself turning onto a rough track, you are likely on the wrong approach. (nevisrange.co.uk)

By public transport, the most straightforward hub is Fort William. From there, Nevis Range states that the 512 Shiel (N41) bus runs from Fort William town centre to Nevis Range, though timetables should always be checked close to travel day. It is also possible to walk or cycle from Fort William via the path alongside the A82 and through Leanachan Forest. (nevisrange.co.uk)

What the route feels like

Expect a steady build from lower access tracks into open mountain terrain, followed by a much more rugged upper section. If your loop uses the Coire nan Laogh side, the ground above the burn becomes rougher and can turn boggy lower down before steepening onto higher ridges. Walkhighlands describes the path beside Allt Coire nan Laogh as faint in places, with boggier ground around the burn forks before the route climbs more directly toward the ridge. (walkhighlands.co.uk)

Higher up, the mountain architecture becomes the main event. There are quartzite outcrops and minor tops before the main dome of Aonach Beag, then a steep, rocky linking section between the two Munros. The bealach between Aonach Beag and Aonach Mòr is one of the places where the day can feel more serious than the mileage suggests: the descent is steep, the ridge narrows, and in poor visibility the route-finding becomes much less forgiving. Walkhighlands notes that this linking ground can be tricky in mist, especially in winter, and that Aonach Mòr’s broad summit plateau can also be difficult to locate accurately in cloud. (walkhighlands.co.uk)

The upper mountain is very exposed. Wind, low cloud, and sudden temperature drops are common even when conditions seem benign at the car park. Because the plateau on Aonach Mòr is long, broad, and relatively featureless in places, this is the kind of route where strong map-and-compass skills matter. For planning and on-route mapping, use HiiKER and do not rely on a single phone battery or signal alone.

Landmarks and views

Aonach Beag is often the more dramatic viewpoint of the two main summits. From there, the skyline opens toward Ben Nevis and Càrn Mòr Dearg, with wider views toward Glencoe, Loch Linnhe, and even out toward the **Is