Why Long Days On The Hill Feel Hard

Most hillwalkers who struggle on a big day out are not unfit in the general sense. They simply haven't trained the specific things a long route demands. A nine-hour circuit of Lakeland fells, a Cairngorm plateau crossing or a full round of Munros asks for three qualities at once: the endurance to keep moving for hours, the strength to haul yourself and a loaded rucksack up steep ground, and the resilience to descend safely when your legs are already tired.

The usual culprits are easy to spot:

• Time on feet — most people rarely walk for more than two or three hours at a stretch, yet a full day is six to ten.
• Total ascent — 900 metres of climbing hurts far more than 20 flat kilometres.
• Carrying weight — a day sack with water, food, layers and kit adds up quickly.
• Descending — the quads take a beating on steep, loose ground and this is where many days unravel.

Train those four things deliberately and long routes start to feel like a pleasant day out rather than a survival exercise.

Increase Distance Gradually

The safest way to build endurance is to add distance slowly. A useful rule is to increase your weekly long walk by roughly ten per cent, and only every second or third week — the intervening weeks stay at a comfortable level so your legs can adapt.

Think in time rather than miles. If your current comfortable outing is three hours, aim for three and a half next time, then four. Build towards a longest training walk of about two-thirds the duration of your target day. If you're preparing for an eight-hour route, a five-hour walk with similar terrain and ascent is ideal preparation.

Two or three shorter walks midweek, of 45 to 90 minutes, make a real difference. Walk briskly on pavements, canal towpaths or park paths — the point is simply to accumulate time on your feet and keep the habit ticking over. Walking, rather than running, is the specific skill you're training, so let walking be the bulk of it.

Make Hills A Habit, Not An Occasion

Distance alone won't prepare you for steep ground. Ascent is what separates a pleasant valley walk from a proper fell day, so seek out gradient every week.

• Aim for 400–600 metres of ascent in a mid-length training walk, building to 800–1,000 metres before a big route.
• Use whatever hills are local: steep field paths, park slopes, multi-storey stairwells, canal locks, stadium steps.
• On a treadmill or gym step machine, set a steep incline and walk rather than run, keeping the pace honest and steady.
• Hill reps work well: find a slope that takes two to four minutes to climb, walk up at a strong pace, descend easily, and repeat six to ten times.

Practise the awkward stuff too — loose scree, wet grass, heather, bog. Balance and confidence on rough ground are skills, and they fade quickly without use.

Train With Your Loaded Rucksack

Your rucksack should be a familiar friend by the time the big day arrives. Start with around 5 kilograms and add roughly 1 kilogram per week until you're carrying your realistic day weight plus a little extra — 8 to 10 kilograms is plenty for most UK day routes.

Wear it on at least one walk each week. It changes everything: your posture, your balance on descents, the pressure on your hips and shoulders, and how hard your calves work on climbs. Check the fit as you go. A well-adjusted hip belt should carry most of the load, with shoulder straps taking only a fraction. If your shoulders ache after an hour, something needs adjusting.

Use the same boots, socks and layers you plan to wear on the day, and test your food and water strategy on these walks. Blisters and stomach trouble are training problems, not summit problems.

Build Leg Strength For Steep Climbs And Tired Descents

Two short strength sessions a week will pay for themselves on steep ground. Keep it simple and bodyweight-focused:

• Step-ups onto a bench or low wall — three sets of 12 to 15 per leg, adding a rucksack when it feels easy.
• Squats and split squats to build the quads and glutes that drive you uphill.
• Heel drops and calf raises off a step for ankles and calves, which take a hammering on rocky descents.
• Single-leg balances on a wobbling surface to sharpen ankle stability.

Don't neglect descending. Walking downhill is eccentric work — your muscles lengthen under load — and it's the main cause of next-day soreness. The best training is simply doing it, on real hills, with tired legs, while staying controlled and using walking poles if they help.

Recovery, Fuel And Fitting It Into Real Life

Fitness is built while you rest, not while you walk. Sleep well, eat enough protein, and don't stack your hardest walk right before your biggest one. Take an easy week every fourth week.

A practical week might look like this: two brisk 45-minute walks, one strength session, one hill or stair session, and one longer walk at the weekend. That's manageable alongside work and family life.

In the final fortnight, ease off. Reduce volume by around half while keeping the intensity light, arrive fresh, and treat the route as an enjoyable outing rather than a test. Practise eating little and often — a handful of nuts, a flapjack, a sandwich — and drink steadily before you feel thirsty. Build gradually, train the hills and the rucksack, and those long, glorious full days will feel well within reach.