Shin splints are one of the most common running injuries out there, and one of the most misunderstood. Most runners either push through them until they're forced to stop completely, or rest for a few weeks and come back to the exact same pain because nothing that caused it was actually fixed.
So here's the physio playbook: how to spot them early, manage them properly, and stop them coming back for good.
Is it actually shin splints?
Shin splints (medically known as medial tibial stress syndrome, or MTSS) cause a diffuse, aching pain along the inner edge of your shin bone. It's typically worse at the start of a run and eases as you warm up, and it's tender to the touch along a wide area of the shin rather than at a single point.
This is different from a stress fracture, which causes a sharp, pinpoint pain that gets worse with activity and doesn't ease off. If that sounds like you, stop running and see a physio or doctor before doing anything else. Stress fractures need proper diagnosis, not guesswork.
How to prevent and treat shin splints
1. Address calf weakness and tightness (the real root cause)
Shin splints aren't really a "shin" problem. They're usually caused by overworked, fatigued calf muscles transferring excess load onto the tibia and the surrounding tissue. When your calves can't absorb impact properly, the bone takes the strain instead.
Twice a week, do slow eccentric calf raises: 3 sets of 12 to 15 reps, lowering for a full 3 seconds each time. Pair this with daily calf stretching (30 seconds, both straight-knee and bent-knee versions). This single change addresses the root mechanical cause more effectively than almost anything else on this list.
2. Follow the 10% rule properly
The single biggest risk factor for shin splints is a sudden jump in training load, whether that's more mileage, harder surfaces, or more speed work than your tibia has had time to adapt to.
Increase your weekly mileage by no more than 10% week on week. If you're adding speed work or hill sessions, don't increase volume in the same week. Pick one variable to progress at a time, and give your body time to catch up.
3. Review your surfaces and footwear
Hard, unforgiving surfaces and worn-out or unsupportive footwear increase the impact load travelling up through the tibia with every stride.
Running insoles can make a meaningful difference here. Enertor insoles are designed to reduce impact while running and walking, and if you have flat feet or overpronate, supportive insoles can also reduce the navicular drop that research has linked to higher shin splint risk. For daily recovery, walking in Enertor Recovery Slides indoors helps support the foot between sessions too.
4. Reduce load rather than stop completely
Complete rest can help in the short term, but research increasingly shows that staying pain-free during and after activity matters more than rest alone. Often that means modifying your training rather than stopping it entirely.
Switch to pain-free cross-training (swimming, cycling, or the elliptical) to maintain fitness while taking impact off the shin. If walking and daily life are pain-free, that's a positive sign you can stay active through low-impact alternatives rather than stopping altogether.
5. Support the area while you stay active
A compression support that improves calf mechanics during running can help address the muscle fatigue that contributes to shin splints. A calf compression sleeve (such as the Bearhug Calf Support) can help reduce tibial stress loading, support muscle mechanics, and manage any swelling during your return to running.
6. Rebuild gradually after a flare-up
The most common reason shin splints come back is returning to full training too soon after the pain eases. Your tissue needs time to catch up with your fitness.
Once you're pain-free in daily life, return to running at around 50% of your previous volume and rebuild by no more than 10% per week. Stay on softer surfaces for the first two to three weeks back. If pain returns at any point, ease back rather than pushing through.
Common mistakes that make shin splints worse
Knowing what to do helps. Knowing what not to do matters just as much, because these are the patterns that keep runners stuck in the same injury cycle.
Ignoring the early warning signs. Shin splints rarely arrive out of nowhere. There's usually a period of tightness or mild aching that runners push through, assuming it'll sort itself out. Catching it at that stage and reducing load for a week is far easier than managing a full flare-up.
Resting completely, then jumping straight back in. Two weeks off followed by a return to full training is one of the most reliable ways to end up back at square one. Rest removes the pain but doesn't build the tissue resilience you need. The calf work and gradual rebuild are what actually change the outcome.
Only stretching, not strengthening. Stretching your calves is useful, but it's not enough on its own. The eccentric calf raise is the piece most runners skip because it's slower and less intuitive than a quick stretch. It's also the piece that makes the biggest difference.
Changing too many things at once. New shoes, increased mileage, and a speed session in the same week is a lot to ask your body to adapt to. Progress one variable at a time and you'll get there faster, not slower.
Running through pain because "it warms up." The fact that shin splint pain often eases mid-run can give a false sense of security. If it hurts at the start and returns after you stop, the load is still too high. Use how you feel in the 24 hours after a run as your guide, not just how you feel during it.
Your return-to-run plan after shin splints
Once you're pain-free in daily life, including walking, stairs, and light activity, you're ready to start building back. Don't rush this part. The tissue in and around the tibia adapts more slowly than your cardiovascular fitness, so your legs will feel capable before they're actually ready.
Use this as your framework:
Week 1: Run/walk intervals on a soft surface. Try 1 minute running, 2 minutes walking, repeated for 20 minutes. You should finish feeling like you had more in the tank. No pain during or within 24 hours means you're good to progress.
Week 2: Increase to 2 minutes running, 1 minute walking for 25 minutes. Still on soft surfaces. Continue your calf raises and stretching throughout.
Week 3: Move to easy continuous running for 20 to 25 minutes at a comfortable, conversational effort. Introduce firmer surfaces gradually if all feels good.
Week 4: Build to 30 minutes of easy running. From here, apply the 10% rule to any further increases in volume or intensity.
A few things to keep in mind throughout:
If pain returns at any point, drop back to the previous week rather than stopping entirely. One step back now is far better than six weeks off later.
Keep the calf raises going even when you feel good. They're not just rehab, they're prevention.
Hold off on speed work, hills, or back-to-back run days until you've had at least three or four pain-free weeks of easy running. Your fitness will come back faster than you expect.
The bottom line
Shin splints are a load management problem, not a willpower problem. Fix the calf weakness, control your training increases, support the area while you stay active, and rebuild properly. Address all four and shin splints become something you prevent rather than something you keep managing.
If your pain is sharp, localised to one spot, or not improving after two weeks of these changes, get it checked by a physio. Bone stress injuries need professional diagnosis.
FAQ
What causes shin splints in runners?
Shin splints (medial tibial stress syndrome) are most commonly caused by weak or tight calf muscles that can't absorb impact efficiently, leading to excess load on the tibia. Sudden increases in training volume, hard running surfaces, and unsupportive footwear also contribute.
How long does it take for shin splints to heal?
Mild cases can settle within two to four weeks with reduced load and targeted calf work. More persistent cases may take six to eight weeks. Returning to running too quickly is the most common reason they come back.
Should I stop running with shin splints?
Not necessarily. If you can walk and carry out daily activities pain-free, low-impact cross-training is often preferable to complete rest. The goal is to stay active while reducing the load on the tibia. If running causes pain during or after, dial back the volume rather than pushing through.
Do insoles help with shin splints?
Yes, supportive insoles can help by reducing impact load and correcting overpronation, both of which contribute to shin splint risk. They work best as part of a wider approach that includes calf strengthening and sensible training load management.
What is the difference between shin splints and a stress fracture?
Shin splints cause a diffuse, aching pain along a wide area of the inner shin, often easing as you warm up. A stress fracture causes sharp, pinpoint pain that worsens with activity and doesn't ease off. If you suspect a stress fracture, stop running and seek a professional diagnosis.
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Written by: Emily Freeman, Triathlon and Running Coach. 2.52 Marathoner and Ironman World Championship podium athlete.