Outer Ankle Tendon Pain
Pain or irritation along the outside of the ankle, often worse with running, uneven ground, or repeated ankle loading.
Outside of the ankle, often behind or below the ankle bone
Peroneal Tendinopathy
Sometimes, if symptoms stay mild and the ankle remains stable
Usually 4 to 10 weeks, depending on irritation levels and tendon strength
Often linked to ankle instability, trail running, hills, or increased running load
Can I Keep Running?
Some runners can continue modified running if symptoms stay manageable and the ankle is not becoming more reactive afterwards. If the tendon becomes sharper, more swollen, or the ankle starts feeling unstable, it usually means the load is still too high.
Typical Recovery Timeline
Milder cases often improve within 4 to 6 weeks, while more stubborn tendon irritation may take several months to fully settle and rebuild. Like many tendon injuries, symptoms can improve before the tendon is fully ready for harder running again.
What's Actually Going On?
Peroneal Tendinopathy is irritation of the peroneal tendons, which run along the outside of the ankle and help stabilise the foot during running and balance.
In runners, these tendons often become overloaded when the ankle is repeatedly asked to stabilise uneven movement or control more load than it is ready for.
This commonly happens after previous ankle sprains, increased trail running, or sudden training changes.
Common Symptoms
Can You Still Run With It?
Sometimes, yes, but only if the ankle stays stable and symptoms remain manageable.
Easy flat running is usually tolerated better than uneven terrain, trails, hills, or faster sessions.
If the ankle feels increasingly unstable, swollen, or painful during or after running, it usually needs a clearer reduction in load and more focused rehab.
Things That Often Need Adjusting:
Does This Sound Like You?
- The outside of your ankle feels sore during or after running
- Uneven ground makes symptoms worse
- The ankle feels weak or unstable
- The tendon area feels tender to touch
- You have a history of rolled ankles
- The discomfort builds gradually rather than starting with one dramatic injury
Why Do Runners Get This?
This usually happens when the tendons on the outside of the ankle are repeatedly overloaded.
Often the tendon is working overtime trying to stabilise an ankle that has not fully regained control.
Worth Getting Assessed If:
- •the ankle keeps flaring up
- •swelling is increasing
- •the ankle feels unstable
- •symptoms are not improving with reduced load
- •you are struggling to return to normal running
Get Help Sooner If You Have:
- significant swelling
- repeated ankle rolling
- sharp pain behind the ankle bone
- difficulty weight-bearing
- sudden weakness or instability
- Tendons on the outside of the ankle often stay irritated if the underlying ankle stability problem is not addressed.
A Note From Liesel
“A lot of runners focus only on the sore tendon and forget about the ankle around it. The pain settles a little, they try running again, and the same cycle keeps repeating. Usually, the runners who do best are the ones who rebuild the ankle properly, not just calm the tendon down for a few days.”
How to Treat Outer Ankle Tendon Pain
Download Liesel's structured rehabilitation & exercise guide in PDF format.
Download Rehab Plan (PDF)Stop Guessing. Start Moving Forward.
Get a clear clinical diagnosis and a personalised return-to-running plan with Liesel (In-person in Pretoria East or Online via Google Meet).
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