Why Strength Training Matters for Runners

I often hear my clients say, “I just want to run—do I really need strength training?” Some clients will even skip their strength days, and incorporate another run. The short answer is yes—if you want to run well, stay healthy, and keep improving.

Since turning a certain age, I have found myself strength training at least 3 times a week, sometimes more often in my "off" season. Lifting heavy in my off season and then reducing the weight closer to my race day has allowed me to improve my leg strength, reduce my injury risk and strengthen my (old) bones and tendons.

Strength training builds durability, and running builds endurance. Durability is what allows runners to train consistently and reach their goals.

Strength training reduces injury risk

Most running injuries aren’t caused by running alone, but by weakness, imbalance, or lack of stability that shows up under repetitive impact.

Runner-specific strength training:

• Improves hip, knee, and ankle stability

• Strengthens muscles and connective tissue

• Addresses side-to-side imbalances

  
  

Healthy runners are consistent runners—and consistency is the foundation of progress.

Stronger runners are more efficient runners

When muscles are strong and stable, your body moves with less wasted energy. Strength training helps improve:

• Posture and alignment

• Stride efficiency

• Control late in runs and races

Over thousands of steps, efficiency gains matter.

Strength training supports speed and performance

Speed isn’t just about cardio—it’s about force production and control. Strength training helps runners:

• Push off more powerfully

• Run hills with confidence

• Finish strong instead of fading

  
  

You don’t always need heavy weights to see results. Smart, consistent strength work is enough.

It helps runners manage fatigue

That heavy-leg feeling late in runs is often muscular fatigue rather than lack of fitness.

Strength training helps you:

• Maintain form when tired

• Reduce late-race breakdown

• Feel more in control under fatigue

  
  

Essential for masters runners (you know who you are!)

As we age, muscle mass, bone density, and balance naturally decline. Strength training helps runners:

• Preserve muscle and bone health

• Improve balance and coordination

• Continue running strong for years to come

  
  

Strength training as a key part of lifelong running and should support your running—not compete with it.

Running alone builds fitness. Combined with strength training this will keep you consistent, confident and durable.

If you want to run smarter—not just harder—strength training belongs in your plan.