Why do my knees hurt when i run?

March 11, 2026

Knee pain is one of the most common problems runners experience. If you’ve ever wondered “Why do my knees hurt when I run?”, you’re not alone.


At Weaver Physiotherapy & Sports Injury Clinic in Northwich, knee pain is one of the most frequent issues we treat in runners.


The knee absorbs significant forces during running — often two to three times body weight with every step. Over time, poor biomechanics, muscle weakness, or training errors can lead to irritation and injury.


Understanding the cause of knee pain is the first step toward effective treatment and long-term prevention.


The Most Common Causes of Knee Pain in Runners


1. Runner’s Knee (Patellofemoral Pain Syndrome)


This is the most common running-related knee injury.


Symptoms include:

    •    Pain around or behind the kneecap

    •    Pain during running, especially downhill

    •    Pain when climbing stairs

    •    Discomfort after sitting for long periods


The underlying cause is usually poor control of the hip and thigh muscles, which affects how the kneecap tracks during movement.


Treatment typically focuses on:

    •    Hip and glute strengthening

    •    Movement correction

    •    Gradual training progression


2. IT Band Syndrome


Pain on the outside of the knee is commonly caused by irritation of the iliotibial band.


This condition often occurs when runners:

    •    Increase mileage too quickly

    •    Run downhill frequently

    •    Have weak hip stabilisers


Treatment focuses on:

    •    Strengthening the glute muscles

    •    Improving pelvic stability

    •    Adjusting training load


3. Patellar Tendinopathy (Jumper’s Knee)


Pain just below the kneecap can indicate irritation of the patellar tendon.


This injury is common in runners who:

    •    Perform hill training

    •    Increase speed sessions

    •    Combine running with jumping sports


Rehabilitation usually includes progressive tendon loading exercises.


4. Meniscus Irritation


The meniscus is a cartilage structure within the knee joint.


Symptoms may include:

    •    Joint line pain

    •    Clicking or catching sensations

    •    Swelling


Physiotherapy can often help improve joint function and reduce irritation.


Risk Factors for Knee Pain in Runners


Several factors increase the risk of knee pain.


These include:


• Weak hip and glute muscles

• Poor running mechanics

• Sudden training increases

• Limited ankle mobility

• Poor recovery


At Weaver Physio Northwich, our assessments identify the specific factors contributing to your knee pain.


How Physiotherapy Can Help


Treatment for running-related knee pain often includes:


✔ Strengthening exercises

✔ Movement correction

✔ Running gait analysis

✔ Load management strategies

✔ Soft tissue therapy


Our goal is not just to relieve pain but to improve the way your body moves during running.


Preventing Knee Pain When Running


To reduce injury risk, runners should focus on:


✔ Strength training

✔ Gradual training progression

✔ Good running technique

✔ Adequate recovery

✔ Proper footwear


Developing strength, stability and coordination allows the body to handle running loads more effectively.


When to See a Physio


If knee pain persists for more than 1–2 weeks, it’s worth getting assessed.


Early treatment can prevent minor issues from becoming long-term injuries.


Running Injury Specialists in Northwich


At Weaver Physiotherapy & Sports Injury Clinic, we specialise in treating running injuries including:

    •    Runner’s knee

    •    IT band syndrome

    •    Shin splints

    •    Achilles tendinopathy

    •    Plantar fasciitis


Through detailed assessment and structured rehabilitation, we help runners return to training stronger and pain-free.


Book an Appointment


📍 Weaver Physiotherapy & Sports Injury Clinic

110 Middlewich Road, Northwich


📞 01606 227484


🌐 www.weaverphysio.co.uk



Struggling With a Running Injury?


Many running injuries are caused by biomechanical inefficiencies or training errors.


Our Runner’s MOT at Weaver Physio Northwich includes:


✔ Video running gait analysis

✔ Strength and mobility testing

✔ Injury risk screening

✔ Personalised running advice


Book your Runner’s MOT and discover what might be holding your running back.


📍 Weaver Physiotherapy & Sports Injury Clinic

📞 01606 227484

🌐 www.weaverphysio.co.uk


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Running is one of the most rewarding forms of exercise. It improves cardiovascular fitness, strengthens muscles and bones, supports mental wellbeing, and helps people of all ages stay active. However, recurring injuries can quickly turn an enjoyable hobby into a frustrating cycle of pain, rest, and disappointment. At Weaver Physiotherapy & Sports Injury Clinic in Northwich, Cheshire, we believe that simply treating pain isn’t enough. Our goal is to identify why an injury occurred, correct the underlying cause, and help you return to running stronger than before. That’s why we’ve developed the Weaver Physio 5-Step Running Recovery System™—a structured, evidence-based approach designed to reduce injury risk, improve performance, and keep runners moving confidently. With 70+ years of combined clinical experience, our Chartered Physiotherapists and Sports Injury Specialists have helped thousands of runners recover from injury and achieve their goals. Why Do Running Injuries Keep Coming Back? Many runners experience the same injury repeatedly. Common complaints include: Shin splints Plantar fasciitis Achilles tendinopathy IT Band Syndrome Runner’s knee Hamstring strains Calf injuries Hip pain Knee pain Foot pain Often these injuries aren’t caused simply by running too much. Instead they’re usually the result of several contributing factors combining together over time. Examples include: Poor balance Weak gluteal muscles Reduced ankle mobility Poor running mechanics Insufficient strength Poor stability Lack of coordination Returning to training too quickly Inadequate recovery Sudden increases in mileage or intensity Treating only the painful area often provides temporary relief—but unless these underlying issues are addressed, the injury frequently returns. The Weaver Physio Difference Rather than focusing solely on pain, Weaver Physio focuses on improving your entire movement system. Every runner is different. Your running style, strength, mobility, previous injuries, footwear, training history and biomechanics all influence how your body copes with the repetitive forces of running. Our clinicians look at the complete picture before creating an individual rehabilitation programme. The Foundation of Injury-Free Running The Weaver Running Recovery System™ is built around five key performance pillars: 1. Balance Balance provides the foundation for efficient movement. Every stride involves standing on one leg for a brief moment. Poor balance increases unwanted movement throughout the foot, ankle, knee and hip. Improving balance can: Reduce injury risk Improve control Enhance proprioception Improve confidence on uneven surfaces Increase running efficiency 2. Strength Strong muscles absorb force more effectively. Running places forces of up to three times your body weight through your legs every time your foot hits the ground. If muscles cannot absorb these loads efficiently, tendons and joints often become overloaded. Strength training helps: Reduce injury risk Improve running economy Increase power Improve endurance Reduce fatigue Support healthy tendons 3. Stability Strength alone isn’t enough. Your body also needs stability to control movement. Hip, pelvis, trunk and ankle stability all influence how efficiently force travels through your body. Improved stability helps: Reduce excessive movement Improve alignment Improve efficiency Protect joints Improve endurance 4. Coordination Running is a highly skilled movement. Better coordination allows muscles to work together more efficiently. Improved coordination means: Better movement patterns Improved technique Reduced wasted energy Lower injury risk Greater running efficiency 5. Plyometrics Once strength and stability have been restored, plyometric exercises teach your body to store and release energy efficiently. These exercises improve: Speed Power Elastic tendon function Running efficiency Return-to-sport readiness Plyometrics are introduced progressively when clinically appropriate, helping runners transition safely back to higher-speed running. The Weaver Physio 5-Step Running Recovery System™ Step 1 – Assess Everything starts with an expert assessment. Our comprehensive examination identifies: Injury history Training errors Biomechanics Strength deficits Mobility restrictions Running technique Balance Functional movement Tissue loading capacity Understanding the true cause allows us to design the most effective rehabilitation programme. Step 2 – Correct Next we address the underlying problems. Treatment may include: Hands-on physiotherapy Soft tissue treatment Joint mobilisation Running gait retraining Exercise prescription Mobility work Shockwave Therapy (where appropriate) Acupuncture Sports massage The aim is to restore normal movement while reducing pain. Step 3 – Strengthen Once pain is improving, rehabilitation becomes more active. Your programme may include: Glute strengthening Calf strengthening Core stability Single-leg control Foot strengthening Hip stability Tendon loading exercises Functional strengthening Each programme is tailored specifically to your injury and running goals. Step 4 – Progress Many injuries recur because runners return too quickly. Our clinicians carefully guide your return using progressive loading principles. We monitor: Pain response Running volume Speed Recovery Functional capacity Strength improvements This structured progression builds confidence while minimising the risk of re-injury. Step 5 – Perform Recovery isn’t simply about becoming pain-free. It’s about returning stronger than before. We aim to help runners: Run further Run faster Stay injury-free Improve efficiency Build resilience Achieve personal bests Whether you’re training for your first 5K or your next marathon, we help you perform with confidence. Conditions We Commonly Treat Our experienced clinicians regularly help runners recover from: Achilles tendinopathy Plantar fasciitis Shin splints (Medial Tibial Stress Syndrome) Runner’s knee Patellar tendinopathy IT Band Syndrome Hamstring injuries Calf strains Hip pain Gluteal tendinopathy Stress reactions Foot and ankle pain Muscle strains Tendon injuries Why Early Assessment Matters Many runners try to push through pain. Unfortunately, continuing to train with an underlying injury often makes rehabilitation longer and more complicated. Seeking assessment early allows us to: Identify the cause sooner Reduce recovery time Prevent compensation injuries Keep you active where possible Develop a clear recovery plan Why Choose Weaver Physio? Choosing the right physiotherapy clinic can make a significant difference to your recovery. At Weaver Physio we offer: 70+ years of combined clinical experience Chartered Physiotherapists Sports Injury Specialists Evidence-based rehabilitation Individual treatment plans Comprehensive movement assessment Running injury expertise Hands-on treatment Exercise rehabilitation Shockwave Therapy Acupuncture Sports Massage Friendly, supportive care Convenient Northwich location We don’t believe in quick fixes. We believe in creating stronger, healthier runners. Helping Runners Across Cheshire Our Northwich clinic welcomes runners from across Cheshire, including: Northwich Knutsford Winsford Middlewich Tarporley Frodsham Hartford Lostock Gralam Weaverham Chester Warrington Sandbach Whether you’re recovering from injury or looking to prevent one, our team is here to help. Book Your Running Assessment Today If recurring injuries are stopping you from reaching your potential, now is the time to take action. Discover the Weaver Physio 5-Step Running Recovery System™ and experience a structured, evidence-based approach designed to help you recover, rebuild and return to running with confidence. Our expert team will identify the root cause of your injury, create a personalised rehabilitation programme and support you every step of the way. Weaver Physiotherapy & Sports Injury Clinic 110 Middlewich Road, Northwich, Cheshire, CW9 7DP ☎ 01606 227484 🌐 http://www.weaverphysio.com Run Stronger. Recover Smarter. Stay Injury-Free. At Weaver Physio, we believe every injury is an opportunity to build a stronger foundation. By combining expert assessment with balance, strength, stability, coordination and plyometric training, we help runners break the cycle of recurring injuries and enjoy long-term success. Whether your goal is to complete your first parkrun, achieve a marathon personal best or simply run without pain, our team has the expertise to help you get there safely and confidently. Your recovery starts with the right plan—and we’re here to guide you every step of the way.
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