Winter turns a familiar path into something else entirely

Between roughly November and April, the hills of the UK and Scandinavia offer some of the most rewarding walking you will ever do. They also demand a good deal more of you. A ridge you skipped along in trainers in July can become a genuinely serious undertaking once it is banked with old snow, glazed with verglas or scoured by a forty-mile-an-hour wind. That is not a reason to stay indoors. It is a reason to prepare properly, and the preparation itself is part of the pleasure.

The single most useful habit is to treat a winter day as a mountaineering day with a walk attached, rather than a walk with a bit of snow on it. That shift in thinking shapes everything that follows.

Crampons and ice axe: the skills that earn their place

Crampons are not talismans. Strapping a pair on does not make you safe; knowing when to wear them, and how to walk in them, does. Fit them at the car park or at the first patch of hard snow, and check the bindings again after ten minutes of walking — they work loose, especially in the cold when fingers are clumsy and straps feel tight enough when they are not.

On gentle angled ground, keep your feet flat and let all the points bite. On steeper terrain, use the French technique: roll your ankles so the crampon points stay flat against the slope rather than standing on your front points for hours. Save front-pointing for short, steep steps where it is genuinely needed.

Your axe is a walking aid and a brake. Carry it in the uphill hand, shaft down, head forward, and use it as a third point of contact on anything exposed. If you slip, the arrest is simple in principle: roll onto your front, drive the head of the axe into the snow near your shoulder, and kick your feet in hard. It is much harder in practice than it sounds, so practise it. A soft, safe, snow-covered grassy bank is the ideal classroom, and half an hour there is worth more than any amount of reading.

• Check your crampons fit your boots before the season starts, not on the hill.
• Carry the axe in your hand on steep ground, not on your pack.
• Rehearse the arrest on a safe slope until it is automatic.

Layering: stay dry first, warm second

Cold is rarely what stops people; sweat, then cold, is. Start slightly chilly and add layers as you climb, rather than overheating in a heavy jacket and then freezing the moment you stop. A thin synthetic or merino base layer moves moisture away from your skin. A fleece or light synthetic mid layer traps warmth. A windproof and waterproof shell goes on before the weather arrives, not after.

Cotton is the one fabric to leave at home — once wet it stays wet and pulls heat out of you. Pack a spare pair of gloves, because gloves get soaked and hands get useless. A warm insulated jacket for stops, a hat, and a buff or balaclava round off the system. In Scandinavia, add goggles and a face covering for wind, and consider over-trousers as standard rather than optional.

Plan your day around the light, not the summit

In the Scottish Highlands, December can give you barely six and a half hours of usable daylight; in northern Norway or Sweden, considerably less. Build your route card backwards from dusk and aim to be off the hill with an hour to spare. That often means an early start and a lower summit than you had in mind.

Allow generously for winter conditions — a summer three-hour ascent can easily take five. Tell someone your route and expected return time, and agree what happens if you are late. Carry a headtorch with spare batteries whether or not you plan to use it, and keep a paper map and compass alongside any electronic navigation, because batteries die quickly in the cold.

Emergency shelter and what to do when it goes wrong

A group shelter or bothy bag weighs very little and can be a lifesaver. If someone is injured or the weather turns, get everyone inside it, out of the wind, and onto insulating mats and spare layers before you make any decisions. Sheltering first, then assessing, is almost always the right order. A survival bag is worth carrying too, particularly on solo days.

Mobile signal is patchy in the hills. If you need help, dial 999 in the UK and ask for the police, then mountain rescue. In Scandinavia, dial 112. Give your location, the nature of the problem and the number of people in your group, and keep the phone warm inside a layer.

Reading conditions and knowing when to turn back

Check the avalanche forecast, the mountain weather forecast and the wind chill before you leave, and look again at what the snow is doing underfoot. Wind slab, fresh cornices and hollow-sounding snow are all reasons to choose a different line or a lower objective. Turning back is not failure — it is the skill that keeps you coming back to the hills for decades. The best winter hillwalkers are not the boldest ones; they are the ones who plan carefully, practise their skills, and go home with something still in the tank.