Shin splints: why the front of your shin aches on every run.
That dull ache along your shin bone isn't just 'getting back into running.' Here's what's actually happening, how to tell it apart from a stress fracture, and what to do before it worsens.
The ache starts a few minutes into a run — a dull, spread-out soreness along the front of the shin that wasn't there last month. It's easy to write off as "getting back into shape," but shin splints have a specific cause, a specific pattern, and one genuinely important thing they need to be told apart from before you keep training through it.
What are shin splints, exactly?
Shin splints — clinically medial tibial stress syndrome — is irritation and inflammation of the muscles, tendons, and the tissue covering the shin bone where they attach, usually triggered by a sudden jump in running volume, intensity, or a change in surface or footwear that the tissue hasn't adapted to yet — the same overload math behind IT band syndrome and plantar fasciitis elsewhere in the running cluster. It's a classic overuse pattern: the tissue is being asked to absorb more repetitive load than it's currently conditioned for.
Shin splints vs. a stress fracture — the difference that matters
This distinction genuinely changes what you should do next. Shin splints typically cause a diffuse, broad ache along several inches of the shin that's often worst at the start of a run and eases somewhat as you warm up. A stress fracture causes a much more localized, pinpoint pain — tender to a single spot when pressed — that tends to worsen the longer you run rather than ease up. Any pain that's sharply localized to one point, or that gets worse rather than better through a run, needs an evaluation before you keep training on it.
Shin splints ease as you warm up. A stress fracture doesn't. That single pattern is often enough to tell them apart before any imaging is needed.
What actually causes them
Beyond the obvious "too much too soon," a few contributing factors show up repeatedly:
- Worn-out or inappropriate footwear — shoes that have lost cushioning transmit more shock directly into the shin.
- Running surface — sustained running on hard or heavily cambered surfaces increases repetitive shin loading.
- Foot mechanics — both flat feet and high, rigid arches change how load travels up the leg into the shin.
- Weak hips and calves — muscles that don't absorb shock well upstream shift more load onto the lower leg.
This is exactly why treating shin splints with rest alone often sees the problem return the moment training resumes — the shin healed, but nothing about the mechanics that overloaded it in the first place actually changed.
Can you keep running with shin splints?
Often yes, with modification. Reducing mileage, running on a softer surface, and addressing the underlying contributing factor — worn shoes, a sudden training jump, or weak hips — while the tissue calms down usually allows continued, modified training. Persistent, worsening, or pinpoint pain is the signal to stop and get evaluated rather than push through it.
How long do shin splints take to heal?
With appropriate modification — reduced mileage, addressing footwear and mechanics, and a gradual return — most cases improve meaningfully within three to six weeks. Ignoring early symptoms and continuing to train at full volume typically extends that timeline substantially, since the tissue never gets the chance to actually adapt before the next hard run adds to the irritation.
Shin splints often show up during a training block's early ramp-up. Building mileage more gradually than feels necessary is the single best prevention — the tissue needs weeks, not days, to adapt to new load.
We treat shin splints and other running-related overuse injuries at our Cottleville clinic, with a gait and mechanics review to find what's actually driving it.
Get an assessment before it becomes a stress fracture.
Frequently asked questions
- What are shin splints exactly?
- Shin splints — clinically medial tibial stress syndrome — is inflammation and irritation along the muscles, tendons and the covering of the shin bone (tibia) where they attach, usually from a sudden increase in running volume or intensity that the tissue hasn't adapted to yet. It's an overuse pattern, not a single injury moment.
- How do I know if it's shin splints or a stress fracture?
- Shin splints typically cause a diffuse ache along a broad stretch of the shin that's worst at the start of a run and often eases as you warm up. A stress fracture usually causes a much more localized, pinpoint pain that gets worse with continued activity rather than easing, and is often tender to a single spot when pressed. Any pinpoint pain that worsens through a run needs an evaluation before continuing to train on it.
- Can I keep running with shin splints?
- Often yes, with modification — reducing mileage, softening the running surface, and addressing the underlying cause (usually a sudden training jump, worn shoes, or foot mechanics) while the tissue calms down. Persistent, worsening, or pinpoint pain is the signal to stop and get evaluated rather than push through it.
- What causes shin splints besides running too much too soon?
- Worn-out or inappropriate footwear, running on hard or uneven surfaces, flat feet or high arches that change how load travels up the leg, and weak hip or calf muscles that don't absorb shock well all contribute. That's why a plan that only rests the shin without addressing these factors often sees the problem return once training resumes.
