Common Marathon Training Injuries

The Most Common Running Injuries and How to Prevent Them

Training for a marathon is an incredible accomplishment, but the road to race day can be demanding on the body. As mileage increases and long runs become a regular part of your schedule, the risk of injury also rises.

Whether you're training for your first marathon or chasing a personal record, understanding the most common marathon training injuries can help you stay healthy, train consistently, and reach the starting line feeling your best.

At Core Performance Physical Therapy, we work with runners throughout Orange County to prevent injuries, optimize performance, and keep training on track. The good news is that many marathon-related injuries are preventable when caught early and managed appropriately.

Why Marathon Training Injuries Happen

Most marathon training injuries are not caused by a single event. Instead, they develop gradually when the demands placed on the body exceed its ability to recover and adapt.

Common contributing factors include:

• Increasing mileage too quickly
• Inadequate recovery
• Poor sleep
• Strength deficits
• Running mechanics issues
• Previous injuries
• Training errors
• Lack of mobility or stability

The key to injury prevention is finding the right balance between training stress and recovery.

1. Shin Splints

One of the most common injuries among runners, shin splints typically cause pain along the inside of the shinbone.

Common Symptoms:

• Aching or tenderness along the shin
• Pain during or after running
• Symptoms that worsen with increased mileage

Common Causes:

• Rapid mileage increases
• Weak calves or hips
• Running form inefficiencies
• Inadequate recovery

Early treatment is important to prevent shin splints from progressing into more serious bone stress injuries.

2. Runner's Knee (Patellofemoral Pain Syndrome)

Runner's knee is one of the most frequently reported complaints during marathon training.

This condition causes pain around or behind the kneecap, especially during activities such as:

• Running downhill
• Climbing stairs
• Squatting
• Prolonged sitting

Contributing Factors:

• Hip weakness
• Poor lower extremity control
• Training volume increases
• Mobility limitations

Physical therapy often focuses on improving strength, movement quality, and load management.

3. Achilles Tendinopathy

The Achilles tendon absorbs significant force during running.

When training volume increases faster than the tendon can adapt, irritation can develop.

Common Symptoms:

• Pain in the back of the heel
• Morning stiffness
• Tenderness along the tendon
• Discomfort during speed work or hill running

Early intervention can help prevent a minor irritation from becoming a chronic problem.

4. Plantar Fasciitis

Plantar fasciitis involves irritation of the thick connective tissue on the bottom of the foot.

Common Symptoms:

• Heel pain
• Pain with the first steps in the morning
• Discomfort after long runs
• Foot tightness

Contributing factors often include training load, calf tightness, foot strength deficits, and recovery limitations.

5. IT Band Syndrome

Iliotibial (IT) Band Syndrome commonly affects runners training for longer distances.

Symptoms Often Include:

• Pain on the outside of the knee
• Symptoms that worsen with longer runs
• Discomfort during downhill running

While many people focus solely on stretching the IT band, treatment often involves addressing strength, mechanics, and training errors.

6. Hamstring Strains

Although more common in sprinters, hamstring injuries can occur during marathon training, particularly when fatigue accumulates.

Risk Factors:

• Previous hamstring injuries
• Strength deficits
• Poor recovery
• Sudden increases in training intensity

Strengthening and progressive loading are important components of recovery.

7. Stress Reactions and Stress Fractures

One of the more serious running injuries, stress fractures occur when repetitive loading exceeds the body's ability to repair bone tissue.

Common Locations:

• Tibia (shinbone)
• Foot
• Metatarsals
• Femur

Warning Signs:

• Localized pain
• Pain that worsens with running
• Symptoms that persist despite rest

Prompt evaluation is essential when a stress injury is suspected.

8. Hip Pain

The hips play a critical role in running efficiency and shock absorption.

Hip pain may develop due to:

• Muscle overload
• Tendon irritation
• Strength deficits
• Movement compensations

Addressing hip function is often an important component of injury prevention for distance runners.

The Biggest Injury Risk Factor: Training Errors

While anatomy and biomechanics matter, one of the strongest predictors of injury is training load.

Common mistakes include:

Increasing Mileage Too Quickly

The body needs time to adapt to increasing demands.

Skipping Recovery Days

Recovery allows tissues to rebuild and become more resilient.

Doing Too Much Intensity

Speed work, hill training, and long runs all increase stress on the body.

Balancing these workouts appropriately is essential.

Ignoring Early Warning Signs

Small aches and pains often provide valuable feedback.

Addressing symptoms early can help prevent more significant setbacks later.

How Physical Therapy Helps Marathon Runners

Physical therapy is not just for injured runners.

Many runners use physical therapy proactively to improve performance and reduce injury risk.

Running Assessments

Evaluating mechanics can identify inefficiencies that may contribute to pain or performance limitations.

Strength Testing

Strength deficits often play a role in running injuries.

Mobility Assessments

Restrictions in the hips, ankles, or surrounding tissues can alter running mechanics.

Training Guidance

Physical therapists can help runners manage training loads and return safely after injury.

Recovery Planning

A comprehensive recovery strategy can help optimize performance and reduce overuse injuries.

Injury Prevention Tips for Marathon Training

To stay healthy during marathon training:

• Increase mileage gradually
• Prioritize sleep and recovery
• Strength train consistently
• Fuel appropriately
• Address minor symptoms early
• Follow a structured training plan
• Listen to your body

Consistency is often more important than any single workout.

Stay Healthy Through Every Mile

Marathon training is challenging, but injuries don't have to be part of the process.

By understanding common injury patterns, managing training loads appropriately, and addressing issues early, runners can significantly reduce their risk of setbacks and enjoy a more successful training cycle.

At Core Performance Physical Therapy, we help runners throughout Orange County stay healthy, recover quickly, and perform at their best through personalized, evidence-based care.

Schedule an Evaluation Today

Whether you're dealing with a current running injury or want to prevent one before race day, our team is here to help. Contact Core Performance Physical Therapy today to schedule an evaluation and keep your marathon training moving forward.