Corbetts on Scotland's Islands: Hill-Bagging Meets Island-Hopping

Quick Summary

• Scotland has at least 12 Corbetts on its islands — spread across Skye, Arran, Rum, Mull and Jura, each requiring a ferry or bridge crossing to reach
• Island Corbetts combine hill-bagging with proper adventure logistics — CalMac ferries, tidal schedules and weather windows turn a day-walk into something more memorable than any mainland hill
• The range of difficulty is wide — from Goat Fell on Arran (grade 2, well-pathed, 55-minute ferry from Ardrossan) to Askival on Rum (grade 5, volcanic terrain, limited ferry schedule)
• Track your progress — our Hill Tracker logs your Corbetts as you bag them and finds the nearest unbagged hill to where you live

The best days I have had on Scottish hills involved a ferry. There is something about the commitment of a crossing — the timetable you cannot argue with, the weather you have to read correctly, the knowledge that the last boat leaves at a fixed time — that makes an island Corbett feel like a proper expedition even when the hill itself is only a few hours of walking.

Quick Answer: Scotland's islands hold around a dozen Corbetts (hills between 2,500ft and 2,999ft) across five island groups. Skye has at least two — Glamaig (775m) and Garbh-bheinn (808m). Arran has four including Goat Fell (874m), the easiest island Corbett and one of the best first Corbetts anywhere. Rum has two — Askival (812m) and Ainshval (781m). Mull has one — Dun da Ghaoithe (766m). Jura has one — Beinn an Oir (785m). All are accessible by CalMac ferry. May to September is the season. Book vehicle ferries in advance.

Why island Corbetts are special

Mainland Corbetts are already quieter than Munros. Island Corbetts are quieter again — filtered by the ferry crossing, the extra planning, and the fact that most hill-baggers leave the islands until later in their round. The result is that you will often have the summit to yourself even in peak season.

The other thing that sets island Corbetts apart is the view. When you stand on a mainland summit you see other hills. When you stand on an island summit you see the sea, other islands, and the mainland as a distant coastline. The sense of scale is different. Goat Fell looking across the Firth of Clyde to Kintyre. Askival looking across to the Cuillin of Skye. Beinn an Oir looking south to Islay and north to Mull. These are views that mainland summits simply cannot offer.

There is also the practical point: the ferry imposes structure on your day. You have a departure time and a return time. You plan around it. This sounds like a constraint but in practice it is liberating — you stop dithering about when to set off and you walk with purpose.

Heights and grades from src/lib/data/corbetts.ts, verified against the Database of British and Irish Hills.

Arran: the accessible island Corbetts

Arran is where most people should start. The ferry from Ardrossan takes 55 minutes, runs frequently, and Ardrossan is reachable by train from Glasgow in 45 minutes. No car needed — Goat Fell starts a 15-minute walk from Brodick ferry terminal.

Goat Fell (874m) — grade 2

The highest point on Arran and one of the best first Corbetts in Scotland, island or mainland. A clear, well-trodden path from Brodick Castle through oak woodland and up the long northeast ridge to a granite summit with views to Ireland, Kintyre, the Ayrshire coast and the Argyll hills. 13km round trip, 880m ascent, 5 hours. The path is good the whole way — this is a grade 2 walk that happens to be on an island.

Goat Fell is also one of the few Corbetts you can genuinely do as a car-free day trip from Glasgow. Train to Ardrossan, ferry to Brodick, walk to the summit, ferry back. It is a long day but it is possible between May and August when the daylight allows it.

Caisteal Abhail (859m) — grade 4

The wilder Arran Corbett. Caisteal Abhail sits on the granite ridge north of Goat Fell and is a significantly harder day — 15km, 756m ascent, with dramatic granite ridges and corries that feel surprisingly alpine for the height. The summit views down into the corries of northern Arran are the best on the island.

Cir Mhor (798m) and Beinn Tarsuinn (826m)

The other two Arran Corbetts complete the granite horseshoe of northern Arran. Both are grade 4 and can be combined with Caisteal Abhail for a long day, though the ridge traverse requires confident scrambling in places. Most walkers tackle them individually from Glen Rosa.

Skye: the Corbetts in the shadow of the Cuillin

Skye is dominated by the Black Cuillin and its Munros, but the island has Corbetts of its own — and they are worth the trip independent of the Cuillin.

Glamaig (775m) — grade 4

The big red cone visible from the Sligachan Hotel. Glamaig is a Red Cuillin hill — rounded granite rather than the jagged gabbro of the Black Cuillin — and the standard route is a steep, direct ascent from the roadside near Sligachan. 14km round trip, 636m ascent, about 4 hours. The hill is famous for the Glamaig Hill Race, a brutal fell run that ascends and descends the hill in under 30 minutes.

The view from the summit is superb: the full Black Cuillin ridge across Loch Sligachan, the Outer Hebrides to the west, and the mainland mountains of Torridon and Kintail to the east.

Note: Bla Bheinn (928m) is often mentioned alongside the Skye Corbetts but it is a Munro, not a Corbett. It is a superb hill — arguably the finest standalone mountain on Skye — but it belongs on a Munro list, not this one.

Garbh-bheinn (808m) — grade 5

A harder proposition. Garbh-bheinn sits on the eastern edge of the Red Cuillin range and involves rougher terrain than Glamaig — 15km, 711m ascent, with some exposed sections on the upper mountain. This is a serious hill day. The views across to the Black Cuillin are among the best on Skye.

Getting to Skye: Drive across the Skye Bridge (free) or take the CalMac ferry from Mallaig to Armadale (30 minutes). Sligachan is the natural base for both Corbetts.

Rum: the remote Corbetts

Rum is the wildest island on this list. Owned by NatureScot, sparsely visited, with a volcanic mountain range — the Rum Cuillin — that looks absurdly dramatic for an island 8 miles across.

Askival (812m) — grade 5

The highest point on Rum and the centrepiece of the Rum Cuillin. Askival is a serious mountain day — 15km, 715m ascent, on volcanic rock with some exposed sections. The standard route from Kinloch follows the Coire Dubh path before climbing steeply to the summit ridge. Grade 5 in the site's classification, which means proper mountaineering terrain.

The summit view is extraordinary: the Black Cuillin of Skye to the north, Eigg and Muck below, the Outer Hebrides on the western horizon, and the mainland mountains stretching from Knoydart to Ardnamurchan.

Ainshval (781m) — grade 4

The second Rum Corbett, connected to Askival by a high ridge. Ainshval can be combined with Askival in a long day traversing the Rum Cuillin, or tackled independently. The ridge between the two hills is narrow and exposed in places — not a bad-weather option.

Getting to Rum: CalMac ferry from Mallaig. The schedule is limited and seasonal — check calmac.co.uk carefully. Most walkers stay overnight at Kinloch (the only settlement) rather than attempting a day trip. NatureScot runs a basic campsite and there is bunkhouse accommodation. Rum midges are legendary — go in May or September, not July.

Mull: the one-Corbett island

Mull has one Corbett. Ben More (966m) is Mull's highest point but it is a Munro, the only island Munro outside Skye. The Corbett is Dun da Ghaoithe.

Dun da Ghaoithe (766m) — grade 4

Mull's Corbett rises above Craignure, the main ferry terminal, which makes the logistics straightforward. The standard route climbs through forest and onto open hillside — 14km, 628m ascent, about 4 hours. The summit gives views across to the mainland, south to Jura and Islay, and west across Mull to the Atlantic.

Dun da Ghaoithe is one of the more achievable island Corbetts as a genuine day trip. The Oban-to-Craignure ferry takes 45 minutes and runs frequently. An early ferry, 4 hours on the hill, and an afternoon ferry back makes this work comfortably in a long summer day.

Getting to Mull: CalMac ferry from Oban to Craignure (45 minutes, frequent sailings). Book vehicle ferries in advance during summer. Foot passengers can usually walk on.

You could use the same visit to bag Ben More (the Munro) on a second day if you are staying overnight — Tobermory or Craignure make good bases.

OS Maps subscription covers every island in this article on a single annual subscription — digital mapping on your phone plus paper map downloads. Essential for the pathless Rum Corbetts and Jura. CalMac Hopscotch tickets save money if you are combining multiple islands in one trip.

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Jura: the Paps Corbett

Jura has one road, one hotel, 200 people and 5,000 deer. It also has one Corbett.

Beinn an Oir (785m) — grade 4

The highest of the Paps of Jura and the only one that qualifies as a Corbett. Beinn an Oir is the central Pap — a distinctive quartzite cone visible from the mainland on a clear day. The standard route from the road at the head of Loch an t-Siob involves 14km and 644m of ascent, with the upper slopes on loose quartzite scree that makes the final climb harder than the numbers suggest.

The classic day on Jura is the Three Paps traverse — Beinn a' Chaolais (733m, a Graham), Beinn an Oir (785m, the Corbett), and Beinn Shiantaidh (757m, a Graham) — which gives you all three distinctive summits in a single long day. Only Beinn an Oir counts for your Corbett tally, but the traverse is the way to do Jura properly.

Getting to Jura: CalMac ferry from Kennacraig (Argyll) to Islay, then a short passenger ferry from Port Askaig (Islay) to Feolin (Jura). The double crossing adds to the expedition feel. No Sunday ferry to Jura. Plan accordingly.

Ferry logistics and CalMac tips

CalMac (Caledonian MacBrayne) operates virtually all Scottish island ferries. Every island Corbett on this list requires a CalMac crossing except Skye, which has a road bridge.

Booking rules of thumb:

• Vehicle ferries in summer (June-August): Book 4-8 weeks ahead on popular routes (Ardrossan-Arran, Oban-Mull). Foot passengers rarely need to book.
• Rum and Jura: Limited schedules. Check calmac.co.uk carefully — some routes have no daily service.
• Sunday sailings: Reduced or absent on many routes. Never assume a Sunday ferry without checking.
• Weather cancellations: Ferries cancel in high winds. Build a contingency day into any multi-island trip.
• Hopscotch tickets: CalMac's island-hopping ticket bundles save money if you are visiting two or more islands.
• Foot passenger advantage: If you can avoid taking a vehicle, you have far more flexibility. Arran and Mull Corbetts are both achievable on foot from the ferry terminal.

When to go: weather windows

Island weather is more exposed than mainland weather. The sea moderates temperatures (warmer winters, cooler summers) but wind and rain are more persistent.

The critical difference between island and mainland weather planning is the ferry. If the weather turns on a mainland Corbett you walk off and drive home. If the weather turns on Rum, you wait for the next ferry — which might be tomorrow. Always check the forecast for both the hill and the crossing.

Combining islands into multi-day trips

The real joy of island Corbetts is stringing several together into a multi-day trip. CalMac's Hopscotch tickets are designed for this.

Long weekend: Arran (2 days) Friday evening ferry to Brodick. Saturday: Goat Fell. Sunday: Caisteal Abhail or Cir Mhor. Sunday evening ferry home. Two Corbetts, one island, minimal logistics. The best starter island trip.

Four-day trip: Mull + Oban (3-4 days) Ferry to Craignure. Day 1: Dun da Ghaoithe. Day 2: Ben More (Munro, while you are there). Day 3: explore Tobermory or the Ross of Mull coast. Return via Oban. One Corbett, one Munro, and a proper island experience.

Week-long expedition: Rum + Skye (5-7 days) Mallaig to Rum. Days 1-2: Askival and Ainshval. Ferry to Skye (or back to Mallaig and drive). Days 3-4: Glamaig and Garbh-bheinn from Sligachan. Day 5: rest day or coastal walk. Up to four Corbetts and genuine expedition feel. Book Rum accommodation in advance.

The grand tour: Arran + Jura (4-5 days) Ardrossan to Arran. Days 1-2: Goat Fell and one more Arran Corbett. Ferry back, drive to Kennacraig. Ferry to Islay, ferry to Jura. Day 3: Beinn an Oir or Three Paps traverse. Return via Islay. Three or more Corbetts, two islands, two very different landscapes.

Frequently Asked Questions

How many Corbetts are on Scottish islands?

At least 10 across five island groups: four on Arran (Goat Fell 874m, Caisteal Abhail 859m, Beinn Tarsuinn 826m, Cir Mhor 798m), two on Skye (Glamaig 775m, Garbh-bheinn 808m), two on Rum (Askival 812m, Ainshval 781m), one on Mull (Dun da Ghaoithe 766m), and one on Jura (Beinn an Oir 785m). Heights and classifications are maintained by the Database of British and Irish Hills.

What is the easiest island Corbett?

Goat Fell on Arran (874m, grade 2, 13km, 5 hours). Good path from Brodick Castle to summit, accessible by ferry from Ardrossan without a car, and the most well-maintained path of any island Corbett. It is one of the best first Corbetts in Scotland, island or mainland.

Can I do island Corbetts as day trips?

Goat Fell (Arran) and Dun da Ghaoithe (Mull) are both achievable as day trips from the mainland with an early ferry and an afternoon return. Skye Corbetts are day trips if you drive across the bridge. Rum and Jura Corbetts are better as overnight trips due to limited ferry schedules.

Is Bla Bheinn on Skye a Corbett?

No. Bla Bheinn (Blaven) at 928m is a Munro — it exceeds the 914.4m (3,000ft) Corbett ceiling. It is a superb hill and often mentioned alongside the Skye Corbetts, but it belongs on a Munro list. The actual Skye Corbetts are Glamaig (775m) and Garbh-bheinn (808m).

Do I need to book CalMac ferries for island Corbetts?

For vehicle crossings in summer (June-August), yes — book 4-8 weeks ahead on popular routes like Ardrossan-Arran and Oban-Mull. Foot passengers rarely need to book except on small-boat routes like Rum. Always check calmac.co.uk for current schedules, especially on routes with limited or no Sunday service.

When is the best time for island Corbetts?

May and September. May has long daylight, few midges and warming weather. September has declining midges, golden light and quieter ferries. July and August are warmest but bring peak midges (especially on Rum and sheltered Skye), the busiest ferry schedules, and the highest chance of needing to book accommodation in advance.

Related Articles

• The 10 Best Corbetts in Scotland — our mainland Corbett shortlist
• Wild Camping on Scottish Islands — combine a Corbett day with island camping
• Skye Trail Planning Guide — multi-day walking on Skye
• Scottish Midge Survival Guide — essential reading for island trips in summer
• What to Wear Hillwalking in Scotland — the layering system for any Corbett day

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This article is for informational purposes only and does not constitute professional safety instruction. Scottish island conditions are more exposed than the mainland — always check both the hill weather forecast (MWIS) and the marine forecast before heading out. Ferry schedules and prices change — verify at calmac.co.uk before travelling. Rum and Jura have limited facilities and no mountain rescue team on island — self-reliance is essential. Heights, distances and grades are verified against src/lib/data/corbetts.ts and the Database of British and Irish Hills at the time of publication. OutdoorSCOT is not liable for any incidents arising from the use of this information.

Sources

• Database of British and Irish Hills — Corbett classifications, heights and prominence data
• CalMac Ferries — Scottish island ferry schedules, Hopscotch tickets and booking
• Scottish Mountaineering Club — Corbetts — SMC Corbett list and completion records
• Mountain Weather Information Service — MWIS hill forecasts for all island areas
• NatureScot — Rum National Nature Reserve — Rum access, accommodation and camping
• Scottish Outdoor Access Code — NatureScot access rights on Scottish islands
• Ordnance Survey — OS mapping for all island Corbetts