How to Avoid Shin Splints and Knee Pain When You Run

If you've started running and felt a nagging ache down your shins or around your kneecaps, you're not alone — these are two of the most common niggles new and returning runners face. The good news: both are largely preventable. Most shin and knee pain comes down to doing too much, too soon, on tired legs or unsupportive feet. This guide walks you through the practical, beginner-friendly habits that keep your legs happy mile after mile.

Shin splints (medial tibial stress syndrome) is that diffuse, aching soreness along the inner edge of your shinbone. It tends to flare when the muscles and connective tissue around the shin are overloaded faster than they can adapt — often after a sudden jump in distance, a switch to harder surfaces, or worn-out trainers.

Runner's knee usually shows up as a dull ache around or just behind the kneecap, worse on stairs or after sitting a while. It's frequently linked to weak hips and glutes, tight calves, and ramping up mileage too quickly rather than anything structurally 'wrong' with the joint. The encouraging part is that the same handful of habits help guard against both.

The single biggest favour you can do your shins and knees is to add load gradually. Your muscles adapt faster than your bones, tendons and connective tissue, so even when your lungs feel ready to push on, the rest of your legs may still be catching up.

A widely used rule of thumb is to increase your weekly running distance by no more than around 10% from one week to the next, and to take an easier week every third or fourth week. Mixing walking and running — the classic 'run two minutes, walk one' approach — is a brilliant, low-impact way to build up if you're new or coming back from a break. Listen to your body and back off if an ache lingers.

A few minutes of preparation makes a real difference. A short warm-up wakes up the muscles and joints; a little regular strength work builds the resilience that stops your shins and knees taking all the load. None of this needs a gym.

Try working these into your week:

Trainers lose their cushioning long before they look worn out, and tired shoes are a common hidden cause of shin and knee soreness. As a rough guide, many running shoes are past their best somewhere in the region of 500–800 km — if you can't remember when you bought them, it may be time. A specialist running shop can watch you run and suggest a shoe that suits your foot and stride.

Surfaces matter too. Constant pounding on hard pavement, or always running the same camber on the side of a road, loads your legs unevenly. Where you can, mix in softer ground like grass, trail or a treadmill, and vary your routes so one leg isn't always working the slope.

You don't need a perfect, textbook gait, but a few gentle cues can lighten the impact through your shins and knees. Aim to land with your foot under your body rather than reaching far out in front, keep your steps quick and light, and stay relaxed and tall through your upper body.

A slightly higher cadence — taking more, smaller steps — tends to reduce over-striding and the braking force that travels up into the knee. If your steps feel heavy or slappy, try shortening them just a touch and imagine running quietly. Small, sustainable adjustments beat dramatic overhauls every time.

Rest days are when your body actually adapts and gets stronger, so they're part of training, not a break from it. Build in at least one or two easier or non-running days each week, prioritise sleep, and keep up with everyday movement and hydration. Winding down properly afterwards helps too — some runners like to stretch and reset to a bit of calming sound and scenery, letting the nervous system settle once the legs are done.

Mild soreness that eases as you warm up and fades within a day or two is usually just your body adapting. Sharp, localised or worsening pain — or an ache that doesn't settle with rest — is a sign to stop and seek advice. A GP or physiotherapist can rule out a stress injury and get you back on track safely, and that's especially worth doing if you're pregnant or managing an existing medical condition.

Shin splints and knee pain aren't an inevitable part of running — they're usually the legs asking for a gentler ramp-up, fresher shoes and a little strength work.

Be patient, build slowly, and let any pain guide you to a professional rather than pushing through it. Your future running self will thank you.