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Ski fitness preparation: 8 weeks before the season

Every winter, the story repeats: skiers full of motivation in their heads, but thighs screaming by the second run, and injuries that always strike at the end of the day. Skiing is a demanding sport that doesn't forgive a lack of preparation. The good news: eight weeks are enough to transform your season. Here's why you should prepare your body in advance, the physical qualities to develop, and a progressive 8-week program I use with my Geneva clients before heading up to the resort.

By Kael Martinez, certified personal trainer · 10 years of experience including 4 in Geneva · Published June 4, 2026 · 11 min read

Why prepare physically for ski season

We tend to see skiing as a leisure activity rather than a sport that deserves real preparation. It's a classic mistake, and it costs you dearly from the very first days at altitude. Understanding what skiing actually asks of your body changes the whole approach.

The real demands of skiing

Skiing means stringing together intense leg contractions for several minutes at a time, run after run, all while keeping your core braced and your balance on unstable terrain. A full day is several hours of repeated effort, often at 1,500 or 2,500 metres of altitude where oxygen is scarcer. Without a physical base, the body holds out for half a day, then technique deteriorates and the fun disappears.

Skiing is mostly eccentric work

The hallmark of skiing is eccentric work: your quadriceps contract while lengthening to constantly brake the knee flexion through turns and bumps. This contraction mode is what produces the famous burning thighs and the severe next-day soreness. Yet eccentric strength must be trained specifically: a muscle that is simply "strong" in pushing isn't necessarily endurant in braking. The right program trains precisely this quality.

Reducing injury risk

Most ski injuries (knee sprains, ACL damage) don't happen by chance: they mostly occur at the end of the day, when fatigue degrades motor control. Endurant legs and a stable knee mean a higher fatigue threshold and better control kept for longer. Physical preparation doesn't eliminate all risk, but it acts directly on its main cause. That's the whole point of structured athletic preparation beforehand.

The 4 physical qualities to develop

Good ski preparation isn't just "doing squats". Four qualities complement each other, and neglecting any one of them leaves a weak point the mountain will be happy to exploit.

1. Leg strength and endurance

This is the foundation. Quadriceps, glutes and hamstrings are the engines and the brakes of every turn. You need strength (to absorb the loads) but above all strength endurance, the ability to repeat these contractions without fading over time. Squats, lunges, leg press, wall sits and step-ups are the kings of this category.

2. Core and trunk stability

A solid core transmits energy between the upper and lower body and protects your back on rough terrain. Without a strong core, you ski "broken", you tire faster and you lose precision. Planks, side planks, anti-rotation and load-transfer exercises build this natural belt that is essential for control.

3. Balance and proprioception

Skiing happens on a surface that slides and shifts under your feet. Proprioception (your fine perception of your body's position) lets you correct constantly and avoid falling. Working on one leg, eyes closed, on an unstable cushion or while moving, wakes up these stabilising reflexes and directly protects the knee and ankle.

4. Cardio capacity

A day of skiing is endurance work in disguise. Good cardio conditioning delays breathlessness at altitude, speeds up recovery between runs and supports leg endurance. Running, cycling, rowing or short intervals: two to three cardio sessions per week make a huge difference on those final runs, the ones where injuries happen most.

The 8-week preparation program

This program follows a progression logic: first build the foundations, then strength, then strength endurance, and finally power and the specific movement. Plan three sessions per week (two strength + one cardio), with at least one recovery day between two leg sessions.

Phase Goal Content & intensity
Weeks 1-2: foundations Wake up the legs, install basic technique Squats, lunges, core, balance · light loads, controlled movements
Weeks 3-4: strength Develop leg and glute strength Loaded squats, lunges, deadlifts, leg press · heavier loads, sets of 6-10
Weeks 5-6: strength endurance Hold the effort over time + proprioception Long wall sits, lunge series, single-leg work, unstable balance · long sets
Weeks 7-8: power & specific Add explosiveness and eccentric braking Controlled jumps (plyometrics), jump squats, slow descents, turn simulation · explosive

Each session starts with 8 to 10 minutes of warm-up (hip, ankle and knee mobility, progressive cardiac build-up) and ends with a few gentle stretches. Week 8 should stay slightly lighter in volume: you don't arrive at the resort exhausted, you arrive fresh and ready. For the right balance between strength and cardio sessions, my article on how often to train per week details the frequency logic.

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The key exercises, with little or no equipment

You can do most of this preparation at home or in a Geneva park. Here are the movements that best reproduce the demands of skiing.

The wall sit

The skier's signature exercise. Back against the wall, thighs parallel to the floor, you hold the position isometrically. It reproduces exactly the descent posture and builds quadriceps endurance. Start at 30 seconds and progress to 1 min 30 or 2 minutes over several sets as the weeks go by.

Squats and their variations

The bodyweight then loaded squat builds the base strength of the legs and glutes. At the end of the program, the jump squat adds the power component. Take care with depth and knee alignment over the toes: this movement quality is what protects the joint on the slopes.

Lunges and single-leg work

Skiing is an asymmetric sport: each leg works independently. Forward, reverse and Bulgarian lunges (rear foot elevated) strengthen each leg separately and correct left-right imbalances, which are common and often the source of the compensations that cause injuries.

Core and balance

Planks, side planks and anti-rotation for the trunk; single-leg balance (eyes open then closed, then on an unstable surface) for proprioception. These two unspectacular families of exercises are precisely the ones that make the difference on control and injury prevention. You can fit them into short, intense sessions: my HIIT at home program shows how to structure this kind of equipment-free session.

Mistakes to avoid

Even with the best intentions, some mistakes come back every autumn and sabotage the preparation. Knowing them saves you a ruined season.

Starting too late

Starting the preparation the week before is pointless, even counterproductively tiring. Physical adaptations (strength, endurance) take several weeks to set in. Eight weeks before your first outing is the right moment; six at a pinch. Beyond the delay, it's the lack of progression that causes problems.

Neglecting eccentric braking

Many people train the push (standing up in a squat) but never the braking (lowering slowly, absorbing). Yet skiing is mostly braking. Deliberately slow down the lowering phase of your squats and lunges, and add controlled descents: this quality is what saves you from thighs on fire by the second day.

Forgetting the upper body and back

Legs are the priority, but a neglected back and shoulders soon remind you they exist: carrying gear, falls, getting up, poles. A minimum of upper-body and back strengthening completes the balance and prevents the small aches that spoil the trip.

Skipping recovery

Stacking leg sessions without recovery is counterproductive: muscle grows at rest, not during effort. Respect one recovery day between two leg-focused sessions, sleep enough, and look after your nutrition. Recovery is an integral part of the program, not wasted time.

Adapting to your profile

The 8-week framework stays the same, but the dosage adjusts to your starting point and your skiing style.

Occasional or beginner skier

If you ski a few days a year, the goal isn't performance but comfort and safety: enjoying every day without suffering or risking injury. Focus on the foundations (weeks 1 to 4), core and balance. A base of general strengthening, like in my getting back in shape coaching, is more than enough to transform the experience.

Skiing after 40

With age, proprioception work and knee strengthening become even more important to prevent injury. Progression is key: you build, you don't force. If you're getting back into physical activity after a long break, the guide on getting back into sport after 40 lays the foundations before tackling ski-specific work.

Advanced skier or freerider

If you're after performance, aggressive skiing or off-piste, power, explosiveness and the ability to absorb impacts become priorities. Phases 7-8 (plyometrics, heavy eccentric braking) take up more space, and structured coaching over several months makes the difference. In person or remotely, online coaching lets you plan this build-up with a precise framework.

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Frequently asked questions

How long before the season should you train for skiing?

Eight weeks is the ideal window: long enough to build leg strength and endurance, short enough to stay motivated with a clear deadline. Six weeks still deliver a clear benefit. Under four weeks, focus on the core, the quadriceps and balance, which give the best short-term return.

Which muscles should you train first for skiing?

Above all the quadriceps (which brake constantly), the glutes, the hamstrings and the deep core. The quadriceps work mostly eccentrically, which is why thighs burn at the end of the day. Preparation therefore targets leg strength and endurance, core stability and balance.

Does preparation really reduce injury risk?

Yes, clearly. Many injuries (knee, ACL, sprains) strike at the end of the day, when fatigue degrades control. By building leg endurance and knee stability through strength and proprioception, you push back fatigue and keep control longer. The risk doesn't disappear, but it drops sharply.

Can you prepare for skiing without equipment, at home?

Yes. Bodyweight is enough for the essentials: wall sits, squats, lunges, step-ups, core work and single-leg balance reproduce the demands of skiing well. To go further, light loads and controlled jumps add the power useful on more demanding slopes.

How many sessions per week to prepare for skiing?

Three sessions: two of leg and core strengthening, one of cardio. That's enough to progress while recovering. Consistency over 8 weeks matters more than the intensity of a single workout.

Do you also need cardio to prepare for skiing?

Yes. A day of skiing is a long, repeated effort at altitude. Good cardio delays breathlessness, improves recovery between runs and supports leg endurance. Two to three moderate cardio sessions per week, or short intervals, complement the strength work.

Final word

Skiing rewards those who arrive prepared. Eight weeks of focused work on the legs, core, balance and cardio, and your whole season changes: controlled runs from morning to evening, less soreness, and above all a clearly reduced injury risk.

You don't need a gym or complex equipment: three sessions a week, consistency and progression are enough. The key is to start early enough and respect the phases, without rushing toward power.

If you want a program calibrated to your level, your schedule and your destination, I can help. The first assessment session is free: 60 minutes to measure your starting point, test your technique on the key movements and build your roadmap to the first slopes.

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