Mountain hiking

The mountain hike is a type of walk in its own right. It is not a longer version of a forest walk — it is a trip through terrain that follows different rules. When 31 per cent of the population report that they have been on a mountain hike over the course of a year, it is the one activity that, more than anything else, marks the transition from everyday friluftsliv (the Norwegian tradition of unhurried, outdoor open-air living) to what calls for a certain capacity for judgement.

What sets the mountain hike apart from the rest of the walking family is not height above sea level alone, nor physical effort. It is what happens when the weather turns, the visibility drops, or the terrain turns out to be different from what the map suggested. In the mountains the response is more immediate than below the tree line — and the reading work along the way is a larger part of the trip than the walking itself.

What actually changes above the tree line

The tree line is not a legal boundary, but it is a practical one. When the trees disappear, a handful of things disappear with them:

Shelter from the wind — on a plateau or a ridge you stand exposed
Visual landmarks — in thick fog an open mountain face can be without direction
Shade and water supply in the same place — streams are often present in the mountains, but not always where the tree stood
Shorter reaction time on weather — fronts are seen earlier but strike faster
A small margin on temperature — every 100 metres of ascent is roughly 0.6 degrees colder, plus wind

To make these differences concrete: a summer day of 18 °C and a light breeze in the valley can be 12 °C and 10 m/s of wind at 1,200 m above sea level. That is not cold on paper, but the combination of wind and damp makes it feel like below freezing if you get soaked through and have no windproof outer shell.

Weather and visibility assessment

Reading mountain weather goes through this in detail. For the mountain hike the main points are:

Check a mountain-specific forecast, not just the nearest town
The wind on the summits is typically 1.5–2 times as strong as stated
Fog is the most common cause of serious incidents
The cloud cover often tells you more about coming weather than the forecast does, if you read it correctly

Snutid (turnaround time) is mandatory on the mountain hike. Set a time the evening before, based on day length and an estimated time budget, and keep it. When you are behind schedule at twelve o’clock, you do not get better on time as the day goes on — you get worse.

The packing list in the mountains

For a summer day trip in the mountains the packing list is short, but no part of it is optional:

Map and compass — even when you have a phone
A windproof outer shell (jacket), preferably windproof trousers too
An extra warm layer — a down jacket or a thicker fleece jacket
A head torch with a spare battery
A water bottle or system with a 1.5–2 litre capacity
Food for the whole trip plus an hour
First-aid kit — blister plasters and a compression bandage at minimum
A phone with battery and preferably an external battery pack
A flask with a hot drink (it makes a difference on a cold day)
Sunglasses and sun cream (especially over snow surfaces)

For multi-day mountain hikes this grows with a sleeping bag, sleeping mat or cabin requirements, more food, spare batteries — see long-distance hiking for that.

Clothing and layering is the principle behind how the clothes are meant to work together. Packing lists give concrete versions.

Water supply in the mountains

This is often underestimated. In summer, streams and meltwater run in many mountain areas — in Jotunheimen, Rondane, Hardangervidda — and you can largely drink straight from a running stream above the tree line. It is one of those outdoor experiences that is easier in Norway than almost anywhere else.

But it is not universal. On Hardangervidda in a dry summer several streams can be dry. On Finnmarksvidda it can be a long way between drinkable water in parts of the season. On the coastal mountains of Northern Norway it can be hard to find fresh water on ridges and summits.

Rules of thumb:

Drink from streams that are running — not from standing water
Avoid streams downstream of grazing areas or cabins
Filter or boil if you are unsure, especially in summer
Pack at least 1.5 litres with you from the start, do not count on refilling along the way
In hot summers or in autumn it can be wise to carry 2–3 litres

Norwegian mountain hikes typically follow marked trails — red Ts, cairns or paint — maintained by local DNT (the Norwegian Trekking Association) chapters or other hiking clubs. The trails are largely well marked in good weather, but in thick fog or snow cover the marking can disappear. Then map and compass are what count.

Practical skills for the mountain hike:

Being able to read a contour map and recognise terrain forms from it
Taking a compass bearing and holding the direction on it for over a hundred metres
Estimating distance on a map and translating it into time
Identifying where you are with the help of landmarks (cross-bearing)

GPS and a map app are good aids, but they are aids — not a replacement. Phones die, batteries freeze, apps crash. Orienteering goes through the basic skills.

Classic Norwegian mountain hikes

The range is wide, both in terrain and in threshold:

Beginner-friendly mountain hikes for a first or second time: Bitihorn, Slettfjellet, Lyngshornet, Skåla.

Classic day trips with more terrain: Galdhøpiggen, Glittertind, Snøhetta, Besseggen, Romsdalseggen.

Longer multi-day trips across mountain and plateau (vidde): Hardangervidda east–west, Jotunheimen Fondsbu–Memurubu–Gjendesheim, the Femundsmarka round trip, Kungsleden in Sweden (but also Padjelantaleden into Norway).

First mountain hike goes through what is built to be a first time.

Safety and assessment

The fjellvettreglene — the Norwegian Mountain Code — apply here. The nine rules from DNT and the Norwegian Red Cross, originally from 1952 and last revised in 2016, are not guidelines for expert mountaineers. They are guidelines for ordinary mountain walkers, and that is the context in which they are most valuable.

The most practically applicable is rule 2: ‘Show respect for the weather and the weather forecast.’ It covers most of what actually goes wrong on Norwegian mountain hikes. At Easter 1967, 17 people died in the mountains during a severe deterioration in the weather, and that triggered a thorough revision of the rules and the campaign Velkommen til fjells – men ta ansvaret selv. That line has held.

Fjellvettreglene is the full text. For the mountain hike it is mandatory reading.

Season

The Norwegian mountain-hiking season depends on height and region:

Low mountains (under 1,200 m above sea level) in Southern Norway can be accessible from May to October
High mountains (over 1,500 m above sea level) usually have a season from late June to mid-September
The mountains of Northern Norway have a shorter season — typically July to mid-September
Winter mountains are an entirely different activity, covered under ski touring

Snow remnants often lie well into the summer on north-facing slopes and high plateaus. That means a trail on the map in July may require you to cross a snowfield in steep terrain. Consider this in advance if you know the season is late.

Next steps

If the mountain hike is new: walk one of the beginner-friendly classics on a good day before you plan an ambitious trip. First mountain hike goes through what is recommended and why.

If you walk regular mountain hikes and want to go further: build out orienteering and avalanche knowledge, especially if you walk the autumn or winter season where avalanches may be relevant.

For anyone wanting to extend to several days: long-distance hiking builds on the same foundation, and the DNT system and the cabin network makes it possible without carrying everything yourself.

Learn more

Text: Snuitide (2026).