Physical Therapist at PhysioFIT·May 27, 2026·9 min read
The short answer:if your shins ache after running, it's almost always shin splints(medial tibial stress syndrome) — an overload of the bone lining and muscles of your lower leg from doing too much, too soon. It's fixable, and not by resting completely: you fix it by managing your training load, strengthening the calf and shin, and tidying up your running mechanics. The one thing you must rule out first is a stress fracture — here's how to tell the difference and exactly what to do.
Quick check: where exactly is the pain?
- Diffuse ache along the inner edge of the shin that warms up during a run → classic shin splints (MTSS).
- Sharp, pinpoint pain in one spot, worse hopping on that leg, maybe aching at night → possible stress fracture — stop and get assessed.
- Tight, building pressure in the front/outer shin that eases with rest → possible compartment issue worth evaluating.
I'm a physical therapist at PhysioFIT in Bend, and in a running town like ours, shin pain is one of the most common complaints that walks through the door — especially in spring when everyone ramps up mileage at once. Let's get you back on the trails the right way.
What's Actually Causing Your Shin Pain
"Shin splints" is the everyday name for medial tibial stress syndrome (MTSS). When you run, the tibia (shin bone) flexes slightly with every impact, and the muscles that attach along it — the tibialis posterior, soleus, and tibialis anterior — pull on the bone's lining. Push the volume up faster than the tissue can adapt, and that lining and the attaching muscles get irritated and inflamed. The result is the diffuse, achy shin pain that flares during and after running.
The key insight: this is a capacityproblem. Your lower leg isn't yet strong enough for the load you're asking of it. That's why the fix is building capacity, not just removing load.
Shin Splints vs. Stress Fracture: Know the Difference
This is the one distinction that matters for your safety. A bone stress injury that's ignored can become a full stress fracture and cost you a whole season.
| Shin splints (MTSS) | Stress fracture | |
|---|---|---|
| Pain location | Diffuse, spread along the inner shin (several inches). | Pinpoint — you can cover it with one fingertip. |
| During activity | Often warms up and eases as you run. | Tends to worsen the longer you go. |
| Hop test | Usually tolerable. | Hopping on that leg is sharply painful. |
| At rest / night | Settles with rest. | Can ache at night or at rest. |
If your symptoms line up with the right-hand column, stop running and get assessed before you do more. When in doubt, treat it as the more serious one until a professional says otherwise.
Why It Happened (Almost Always Training Load)
- Too much, too soon.The classic culprit — a sudden jump in mileage, intensity, or frequency. Bend's spring trail season is peak shin-splint time for exactly this reason.
- Overstriding / low cadence. Landing with your foot far ahead of your body spikes the load through the shin on every step.
- Surface or shoe changes. New shoes, worn-out shoes, or a switch to harder surfaces all change the load on the lower leg.
- Weak calves and shins. An under-built lower leg fatigues early and dumps more stress onto the bone.
How to Fix Shin Pain After Running
- Manage the load — don't stop cold. Cut your running volume back to a pain-free level (often 30–50%) rather than quitting entirely. Bridge the gap with low-impact cross-training — cycling, pool running, the elliptical — to keep fitness while the shin calms down.
- Strengthen the calf and shin. This is what builds the capacity you were missing. Progressive heel raises for the calf and toe raises for the tibialis anterior are the foundation. For a full routine, see our guide to the best tibialis anterior exercises.
- Bump your cadence ~5–10%. Shortening your stride slightly is one of the most effective ways to offload the shin. Count your steps for 30 seconds and aim a touch higher.
- Check your shoes and surfaces. Replace worn shoes, and reintroduce hard surfaces and hills gradually rather than all at once.
The Return-to-Running Progression
Once daily walking is pain-free, rebuild gradually:
- Start with a walk-run (e.g., run 2 minutes, walk 1, repeat) on flat, forgiving terrain.
- Follow the ~10% rule — increase weekly mileage by no more than about 10%.
- Keep pain ≤2–3/10 during the run and back to baseline the next morning. If it spikes, drop back a step.
- Add speed and hills last, after your easy mileage is solid.
When to See a Physical Therapist
- Pain is pinpoint, worsening, or hurts when you hop on that leg.
- Shin aches at night or at rest.
- It's not improving after 2–3 weeks of load management.
- It keeps coming back every time you return to running.
A PT can confirm it's MTSS and not a bone stress injury, find the specific cause in your training and mechanics, and build the strength progression that keeps it from returning.
How We Treat Shin Pain at PhysioFIT
When you come in for overuse and running injury rehab in Bend, we screen for stress fracture first, then dig into the real cause — your training history, cadence, footwear, and lower-leg strength (which we can measure objectively). From there we build a loading and return-to-run plan that gets you back on the trails without re-flaring it. For the bigger picture on running smart, our runner's roadmap is a great companion read.
Bottom line: shin pain after running is a load-and-capacity problem. Rule out a stress fracture, manage your mileage, strengthen the lower leg, fix your cadence — and you'll run through Bend's trails pain-free again.
Frequently Asked Questions
Why do my shins hurt after running?
The most common reason is medial tibial stress syndrome — shin splints — an overload of the bone lining and the muscles that attach to your shin. It almost always traces back to doing too much too soon: a jump in mileage, a new surface or shoes, or running with a low cadence that overloads the lower leg. The good news is it responds well to managing your training load and strengthening the calf and shin, not to complete rest.
How do I know if it's shin splints or a stress fracture?
Shin splints usually cause diffuse, achy pain spread along the inner edge of the shin that warms up during a run. A stress fracture is more sinister: sharp, pinpoint pain you can cover with one fingertip, often worse with hopping on that leg and sometimes aching at night or rest. If you can pinpoint one tender spot, hopping hurts, or pain is escalating, stop running and get assessed — stress fractures need a different, more protective plan.
Should I keep running with shin splints?
You can usually keep running in a reduced, managed way — full rest tends to leave you deconditioned and no stronger. The guideline we use: pain should stay at or below 2–3 out of 10 during the run and settle by the next day. If it does, reduce volume and keep going while you strengthen. If pain climbs higher, lingers, or becomes pinpoint, back off and cross-train while it calms down.
How long do shin splints take to heal?
Mild shin splints often settle in 2–4 weeks with load management and strengthening; more stubborn cases take 6–8 weeks. The biggest variable is whether you keep aggravating it. Address the cause — training load, cadence, and calf/shin strength — and it resolves and stays gone. Ignore the cause and run through escalating pain, and you risk progressing to a stress fracture, which sidelines you for months.
Does increasing my running cadence help shin pain?
Often, yes. Many runners with shin pain overstride — landing with the foot well ahead of the body — which spikes the load through the lower leg. Increasing your step rate by about 5–10% shortens your stride and reduces that load on every step. It's one of the simplest, most effective changes you can make, and it costs nothing.
What exercises help prevent shin pain when running?
Strengthening the calf (soleus and gastrocnemius) and the tibialis anterior — the muscle on the front of your shin that absorbs impact on landing — is the foundation. Heel raises, toe raises, and progressive calf loading build the lower-leg capacity that protects you. See our guide to the best tibialis anterior exercises for a full routine.
Please Note: The information on this page is for general education and is not a substitute for professional medical advice. Every runner — and every body — is different, and shin pain that is pinpoint, worsening, or not improving should be evaluated in person. If you'd like a plan built for your shins, or want to train with a physical therapist in Bend, Oregon, reach out at PhysioFITBend.com.