Why Does My Ankle Hurt When I Run? Causes and Fixes

Ankle pain during running is more than just annoying—it can sideline your training and affect everything from your gait to your motivation. Understanding what's causing the pain is the first step to fixing it.

Why Running Stresses the Ankles

Every time your foot strikes the ground while running, your ankle absorbs 2-3 times your body weight. Do that thousands of times per run, and it's clear why the ankle is vulnerable. The ankle must be both mobile (to adapt to surfaces) and stable (to control forces)—a balance that's easy to disrupt.

Common Causes of Ankle Pain While Running

1. Achilles Tendinopathy

What it feels like: Pain at the back of the ankle, either at the Achilles tendon itself or where it inserts into the heel. Often stiff in the morning and painful at the start of a run.

Why it happens: Overuse, sudden training increases, tight calves, weak calf muscles, or inadequate recovery.

The fix:

• Eccentric heel drops (gold standard treatment)
• Calf strengthening
• Gradual progression of running volume
• Address tight calves with stretching and foam rolling
• Isometric holds for pain relief
• Reduce hill running temporarily

2. Ankle Sprain (or Post-Sprain Issues)

What it feels like: Pain on the outside (lateral) or inside (medial) of the ankle. May have a history of "rolling" the ankle.

Why it happens: Ligament damage from an acute sprain, or ongoing instability from a previous sprain that never fully healed.

The fix:

• Ankle strengthening (especially peroneals)
• Balance and proprioception training
• Ankle mobility work
• Supportive footwear during recovery
• Progressive return to running
• Consider bracing initially

3. Posterior Tibial Tendinopathy

What it feels like: Pain on the inside of the ankle, below the medial malleolus (inner ankle bone). May worsen with pushing off.

Why it happens: Overuse of the posterior tibial tendon, often associated with overpronation or flat feet.

The fix:

• Arch strengthening exercises
• Calf raises (especially with inversion emphasis)
• Supportive footwear or orthotics
• Single-leg balance work
• Reduce training volume temporarily
• Address overpronation

4. Peroneal Tendinopathy

What it feels like: Pain on the outside of the ankle, behind or below the lateral malleolus (outer ankle bone).

Why it happens: Overuse of the peroneal tendons, often from running on cambered roads or high training volumes.

The fix:

• Peroneal strengthening (ankle eversion exercises)
• Lateral ankle stability work
• Vary running surfaces
• Avoid excessive mileage on one side of the road
• Gradual return to activity

5. Ankle Impingement

What it feels like: Pinching or blocking sensation at the front (anterior) or back (posterior) of the ankle, especially at end ranges.

Why it happens: Bone spurs, scar tissue from previous injuries, or soft tissue getting caught during movement.

The fix:

• Ankle mobilization exercises
• Address range of motion limitations
• Heel lifts may help posterior impingement
• Professional evaluation if symptoms persist
• Sometimes requires surgical intervention

6. Stress Fracture

What it feels like: Localized pain that gets worse with running and better with rest. May have point tenderness on a specific bone.

Why it happens: Repetitive stress exceeding the bone's ability to remodel, often from rapid training increases, inadequate nutrition, or low bone density.

The fix:

• STOP running—this requires rest
• See a healthcare provider for imaging
• Address underlying factors (nutrition, training errors)
• Gradual return following healing
• Cross-training to maintain fitness

7. Tight Calf Muscles

What it feels like: General ankle stiffness and discomfort, feeling restricted during running.

Why it happens: Inadequate stretching, sitting for long periods, or calf-dominant running patterns.

The fix:

• Regular calf stretching (both straight and bent knee)
• Foam rolling calves
• Dynamic warm-up before running
• Address running technique
• Consider heel-to-toe drop in shoes

8. Poor Ankle Mobility

What it feels like: Difficulty with dorsiflexion (pulling foot toward shin), feeling "blocked" during running.

Why it happens: Tight calves, stiff joint capsule, or previous injury.

The fix:

• Ankle mobility drills daily
• Banded ankle mobilization
• Calf stretching
• Assess and address asymmetries
• Patience—mobility takes time

Self-Assessment: Identify Your Issue

Location Check

• Back of ankle → Achilles tendinopathy
• Inner ankle → Posterior tibial tendinopathy, medial sprain
• Outer ankle → Peroneal tendinopathy, lateral sprain
• Front of ankle → Anterior impingement, extensor tendinopathy
• Heel bone → Stress fracture, Achilles insertion issue

Timing Check

• Pain at start that warms up → Often tendinopathy
• Pain that worsens during run → Could be many causes
• Pain after running → Inflammation, overuse
• Pain with every step → Stop and get evaluated

History Check

• Previous sprains → Instability, ligament damage
• Rapid training increase → Overuse injury
• New shoes → Adaptation issues
• Running on cambered roads → Peroneal stress

Exercises to Fix Ankle Pain

For Achilles Issues

Eccentric Heel Drops

1. Stand on a step on the ball of your foot
2. Rise up on both feet
3. Shift weight to affected leg
4. Slowly lower heel below step level (3 seconds)
5. Rise up with both legs again
6. 3 sets of 15, twice daily

For Ankle Instability

Single-Leg Balance Progressions

1. Stand on one foot for 30 seconds
2. Progress to eyes closed
3. Progress to unstable surface
4. Progress to movement challenges
5. Daily practice

Ankle Alphabet

1. Sit with leg extended
2. Write the alphabet with your foot
3. Makes the ankle move in all directions
4. Daily, both feet

For Peroneal/Posterior Tibial Issues

Resisted Ankle Eversion

1. Loop band around foot
2. Anchor to inside
3. Turn foot outward against resistance
4. 3 sets of 15

Resisted Ankle Inversion

1. Loop band around foot
2. Anchor to outside
3. Turn foot inward against resistance
4. 3 sets of 15

For General Ankle Mobility

Banded Ankle Mobilization

1. Loop band low around front of ankle
2. Band anchored behind you
3. Lunge forward, driving knee past toes
4. Band pulls talus backward for better glide
5. 2 minutes per side

Calf Stretch (Straight Leg)

1. Against wall, back leg straight
2. Lean in until you feel calf stretch
3. Hold 30-60 seconds
4. Targets gastrocnemius

Calf Stretch (Bent Leg)

1. Same position but back knee bent
2. Lean in for stretch lower in calf
3. Hold 30-60 seconds
4. Targets soleus

Running Modifications

While addressing ankle pain:

• Reduce mileage by 25-50%
• Avoid hills temporarily
• Stick to flat, even surfaces
• Consider run-walk intervals
• Check your shoes — worn out or wrong type?
• Ice after runs if inflamed
• Cross-train to maintain fitness (cycling, swimming)

When to See a Professional

Seek medical attention if:

• Pain is severe or sudden onset
• Significant swelling that doesn't improve
• You can't bear weight
• Pain persists despite 2-3 weeks of self-care
• Numbness or tingling present
• Visible deformity
• Suspected stress fracture (point tenderness on bone)

Prevention Tips

1. Progress gradually — Follow the 10% rule for mileage increases
2. Strengthen your ankles — Regular calf and ankle stability work
3. Warm up properly — Dynamic movements before running
4. Vary your surfaces — Don't always run on concrete
5. Wear appropriate shoes — Replace every 300-500 miles
6. Address weakness — Hip strength affects ankle loading
7. Listen to pain — Don't run through sharp or worsening pain

The Bottom Line

Ankle pain during running usually stems from overuse, mobility limitations, or stability deficits—all of which are fixable. Identify the likely cause, address it with targeted exercises, and be patient with your return to full training.

Running should feel good. With the right approach, you'll be back to pain-free miles.