The Highlands look modest on a map and feel enormous on the ground. A journey that reads like ninety minutes can swallow half a day, especially on single-track roads where you are forever reversing into a passing place. Leave the car at home and something shifts: the landscape stops being a backdrop and becomes the whole point. You get to watch it, rather than watch for oncoming traffic.

Why go car-free in the Highlands

There is the obvious environmental case. A bus or train carrying thirty people has a far lighter footprint per passenger than a car carrying one, and Highland public transport is improving year on year. But the practical arguments are just as persuasive. Fuel around Inverness is expensive, parking in Portree vanishes by mid-morning in July, and a single-track road with a caravan ahead of you can turn a forty-mile hop into a two-hour crawl.

Travelling by bus, train and ferry also puts you among people rather than behind glass. You will share a carriage with hillwalkers, ferry workers and schoolchildren, and you will hear about the village ceilidh, the best chip shop and the path that avoids the bog. That is not a small part of the trip.

Inverness: the ideal hub

Inverness is the natural starting point. It is compact, walkable, and everything radiates from a small area around the bus station and the railway station, which sit a few minutes apart. You can arrive by overnight sleeper from London, step off, have breakfast on the river, and be on a westbound train before lunch.

The city itself rewards a day: the cathedral, the Victorian Market, a walk along the Ness Islands, and a slow pint by the river while the gulls argue overhead. Use it as a staging post rather than a place to rush through, and buy your onward tickets while you are there — staff at a ticket office can explain the rover-style passes and day returns far better than any app.

Train journeys that are the destination

Three Highland lines are worth travelling for their own sake, so treat the timetable as part of the itinerary rather than an obstacle.

• Inverness to Kyle of Lochalsh — around two and a half hours of lochs, moorland and sudden sea views, passing Achnasheen and dropping down to Plockton, a village of palm trees and whitewashed cottages that deserves at least a night.
• Fort William to Mallaig — the classic west coast run, crossing the Glenfinnan viaduct and skirting beaches that look Caribbean until you touch the water. A steam-hauled service runs in summer and sells out weeks ahead.
• Inverness to Thurso and Wick — the Far North line, roughly four and a half hours, crossing the Dornoch Firth and cutting through empty Flow Country. From Thurso you can walk to the ferry for Orkney.

To join the Fort William line from Inverness, take the coach down the Great Glen — a scenic two-hour run that follows Loch Ness most of the way.

Buses and coaches into the glens

Coaches cover ground the railway never reached. From Inverness you can head south to Aviemore for the Cairngorms, with local services continuing to the mountain car park and Rothiemurchus; west to Ullapool for the ferry to the Outer Hebrides; or further up the coast towards Gairloch. Summer timetables add services to Glen Affric, one of the loveliest glens in Scotland and almost impossible to enjoy from a car park.

Be realistic about frequency. Some of these routes run a handful of times a day, and the last bus back can leave mid-afternoon. Plan your walking around the timetable rather than the other way round, and always confirm the return time with the driver on the way out.

Ferries and island hops

Ferries knit the whole thing together, and foot passengers board first. From Mallaig you can cross to Armadale on Skye; from Ullapool the boat runs to Stornoway on Lewis; from Oban you can reach Mull and beyond; and from Scrabster, near Thurso, you can sail to Orkney. Bicycles usually travel free or for a small fee, which makes a bike plus ferry combination one of the finest ways to see the islands.

Book foot passenger crossings in advance for July and August, and give yourself a buffer. Wind and swell delay sailings, and a missed connection in the islands is an inconvenience rather than a disaster — there is always another café, another beach, another night.

Practical tips for smooth travelling

• Check timetables before you book accommodation. A stunning cottage with no Sunday service is a beautiful trap.
• Allow generous connection times. Twenty minutes between a bus and a ferry is optimistic in bad weather.
• Carry cash and a card. Some rural services and small ferry terminals are old-fashioned about payment.
• Pack for four seasons in one day. Waterproofs, midge repellent from June to August, and a warm layer for breezy ferry decks.
• Download timetables offline. Mobile signal disappears in glens and on crossings.
• Reserve bikes on trains. Spaces are limited and free, but they must be booked.

Travel this way and the journey stops being dead time between destinations. It becomes the best part of the day — a slow, sociable, low-carbon drift through some of the finest country in Europe.