Build your legs for a full day in the hills: an eight-week plan

If you have ever been eight hours into a hill day, you know it is rarely your lungs that quit first — it is the front of your thighs on the last descent. A full day out asks something different of your legs than the gym or a flat run does, and that gap is the one most people never train. Eight to twelve weeks is enough to close it, on two strength sessions a week and one long walk.

What climbing and descending actually ask of your legs

Going up is an endurance job under steady, moderate load. A thousand metres of ascent means lifting your body plus your pack ten to twenty centimetres with every step, several thousand times over. Glutes and calves fade first, and your heart rate settles high and stays there for hours.

Coming down works differently. The muscle lengthens while it brakes your body, and that eccentric work causes most of the small damage inside the fibres. It is why the soreness two days later sits squarely in your quads rather than your hamstrings.

The practical upshot: train only the uphill and you will reach the top in decent shape and come off the hill wrecked. Descent training is the most neglected part of hill preparation and the one that pays back fastest.

The eight weeks in outline

A typical week runs like this: two strength sessions of 45 to 60 minutes, one long walk at the weekend, and one easier aerobic session of 40 to 60 minutes — bike, brisk walking, easy jogging. Four working days, three rest days. For most people with a job and a family, that is a schedule they can actually keep.

The first three weeks are about technique and tolerable volume: moderate loads, shorter walks. Weeks four to six are the hard middle, with the longest days out and the heaviest sets. Week seven drops to roughly 60 per cent of the volume, and week eight is the hike itself.

If you are coming back after months off, do not drop straight into this. Spend a few weeks easing back into training first, then start counting your eight weeks.

Strength: five things you will feel on the trail

Squats. Three sets of 6 to 10 reps, at a weight that leaves you two or three reps short of failure. A goblet squat with a single dumbbell is plenty if you have no rack. If your positions keep breaking down under load, it is worth going back to squat basics before adding weight.

Step-ups and reverse lunges. Step onto a bench 40 to 50 centimetres high, three sets of 8 per leg, later with an 8 to 12 kilogram pack on your back. Nothing else mimics hauling yourself over a big rock step quite as closely.

Romanian deadlifts. Three sets of 8, for the hamstrings and glutes that do more of the climbing than most people credit. If deadlifting is already in your programme, keep this version light in the same week.

Controlled lowering. Stand on a step or low box and lower yourself on one leg over 3 to 4 seconds, then push back up with the other. Three sets of 6 to 8 per leg. This is the one exercise that prepares the quads directly for what the descent will do to them.

Calves and ankles. Calf raises, three sets of 15 to 20, plus one set with the knee bent. Add thirty seconds of single-leg standing per side — balance on broken ground drains you all day long.

Finish with trunk work: side planks, three sets of 30 seconds, and a one-arm carry for 30 metres, three times. A pack is carried by the trunk, not the shoulders.

Long walks with a pack

The weekend walk is the centre of the plan and nothing substitutes for it. Start at 8 to 10 kilometres with 4 to 5 kilograms on your back, add around 10 per cent of distance each week, and only increase pack weight every second week, up to 8 to 10 kilograms.

Ascent matters more than distance. Aim to complete a walk with roughly 60 to 70 per cent of your target day's total climb by week six. For a 1,200 metre objective, something near 800 metres in training is a sensible marker.

Do at least two of these on ground that resembles the real thing — rock, roots, mud — in the boots and pack you intend to use. On the way down, shorten your stride and resist the urge to run. The point is teaching the muscle to brake, not grinding it to nothing.

If sleep turns broken, your resting pulse creeps up and your appetite for training disappears for more than a week, back off and read the signs of overtraining before you add another hard day.

The last ten days and the day itself

Put your final big walk 10 to 14 days before the hike. In the last week keep the strength sessions but cut to two sets per exercise and drop the controlled lowering entirely — enough to maintain, with time for the legs to recover.

On the day, hold a pace at which you can still speak a full sentence without gasping. After the first hour, take 30 to 60 grams of carbohydrate an hour and 400 to 800 millilitres of fluid, adjusted for heat and how heavily you sweat.

Poles take some of the work off the legs on descents and generally prove their worth on long drops. Break boots in over at least 40 to 50 kilometres beforehand, and test socks and pack on training walks rather than discovering the problem at hour six.

When to see a doctor

Knee pain that appears specifically on descents and lingers for days, a joint that swells, or a knee that locks or catches — none of that should be walked through. If your knee also hurts under the bar, it helps to understand why knee pain shows up in squats, but the diagnosis belongs to a clinician.

Seek help straight away for chest pain, fainting, breathlessness that does not settle with rest, or new calf pain with swelling and redness. If you have heart disease, diabetes, or previous knee or hip surgery, agree the plan with your doctor before you start loading the pack.

The short version

• Descending costs your legs more than climbing — slow single-leg lowering, three sets of 6 to 8 per leg, is the exercise that changes the most.
• Weekly shape: two strength sessions, one long walk, one easy aerobic session. Four working days.
• Grow the long walk by about 10 per cent a week and reach 60 to 70 per cent of your target ascent by week six.
• Build the pack to 8 to 10 kilograms gradually, carrying it on every long walk rather than only at the end.
• Last big day 10 to 14 days out, then an easier week; on the hike itself, 30 to 60 g of carbohydrate an hour.