Achilles Tendonitis From Running: What Causes It and How to Fix It
Why Does My Achilles Hurt When I Run?
The Achilles tendon is built to handle significant amounts of force.
But like any other tissue, it has limits.
When runners increase mileage, hills, speed work or training frequency too quickly, Achilles pain can develop.
The condition is commonly referred to as Achilles tendonitis, although Achilles tendinopathy is often a more accurate term for persistent tendon-related symptoms.
Common Symptoms
Runners with Achilles problems may experience:
Morning stiffness
Pain during the beginning of a run
Pain after running
Tenderness around the tendon
Stiffness after sitting
Pain with hills
Reduced tolerance for jumping
Some runners notice that symptoms improve after warming up but return later.
That does not necessarily mean the problem has resolved.
Why Running Can Irritate the Achilles
Running requires the Achilles tendon to repeatedly store and release elastic energy.
The tendon works particularly hard during:
Sprinting
Hill running
Uphill walking
Jumping
Faster running
Plyometrics
If training demand increases faster than tendon capacity, symptoms may appear.
The Training Error We See Most Often
A runner may go from:
Easy mileage → hills + speed work + increased mileage
within a short period.
That is a major increase in Achilles demand.
Instead of thinking only about mileage, runners should consider the total training stress being placed on the tendon.
How Do You Rehab Achilles Pain?
The answer is usually progressive loading.
Complete rest may temporarily decrease symptoms but does not necessarily restore the tendon capacity required for running.
Rehabilitation may include:
Isometric Loading
Useful during certain stages of rehabilitation to introduce controlled tendon loading.
Heavy Strength Training
Progressive calf strengthening helps improve the force-producing capacity of the calf-Achilles complex.
Single-Leg Calf Training
Running is predominantly a single-leg activity, so rehabilitation should eventually reflect that demand.
Plyometrics
Later-stage rehabilitation may incorporate:
Pogos
Hops
Skips
Jumping
Bounding
Running Progression
The final goal is not simply pain-free calf raises.
It's returning the athlete to running.
Objective Testing at Carolina Movement Doc
A major component of performance-based rehabilitation is knowing whether an athlete is actually getting stronger.
DynaMo can be used to quantify strength and identify side-to-side differences.
VALD ForceDecks can provide objective information regarding:
Jump performance
Force production
Landing
Asymmetry
Lower-extremity performance
This allows rehabilitation decisions to be based on more than symptoms alone.
Movement Analysis Matters
A runner with Achilles pain may also demonstrate limitations elsewhere.
We may assess:
Ankle mobility
Calf strength
Hip strength
Single-leg stability
Squatting
Landing
Running mechanics
The goal is not to identify a single "bad" movement.
Instead, we want to understand how the athlete is handling the demands placed on them.
When Should You Get Evaluated?
Seek professional evaluation if:
Achilles pain continues to worsen
Morning stiffness is increasing
Running is becoming increasingly limited
You repeatedly develop Achilles symptoms
You have significant swelling
You experience sudden severe pain or a popping sensation
A sudden pop, loss of push-off strength, or difficulty walking requires prompt medical evaluation because a tendon rupture needs to be ruled out.
Achilles Tendonitis Treatment in Gastonia
At Carolina Movement Doc, Achilles rehabilitation is built around restoring capacity, not simply reducing pain.
Our approach can combine:
Objective testing + movement analysis + progressive strength + plyometrics + running-specific rehabilitation.
The goal is to help you return to running with an Achilles tendon that is better prepared for the demands you're asking it to handle.
If Achilles pain is keeping you from running, don't wait until it becomes a season-ending injury.
When you are ready to make some serious changes on your achilles tendon pain, then you need to call us here at Carolina Movement Doc and lets tackle this together.
Book a call here → Book A Call
