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The short version
- Shin splints (medial tibial stress syndrome) is a bone stress problem along the inner edge of the shin, usually caused by load rising too fast.
- Pain spread along 5 cm or more of the bone is typical. Pinpoint pain on one spot, or pain at night, needs checking for a stress fracture.
- Relative rest beats total rest: cut running back to a pain-free level and cross-train to keep your fitness.
- Calf, foot and hip strength work helps the shin cope with load. Shoe changes and insoles have weaker evidence.
- Come back gradually with walk-run intervals, and only progress when pain stays at 2 out of 10 or below.
It usually starts quietly. A dull ache along the inside of your shin after a run, gone by the next morning. A few weeks later it turns up earlier in the run and hangs around longer. Eventually it hurts going down stairs, and you start wondering whether you should be running at all.
Shin splints are one of the most common injuries in running and in sports with lots of running and jumping: football, basketball, netball, tennis, dance and military training. Reviews estimate they account for roughly 13% to 17% of running injuries, and the rate is higher in new runners and military recruits.
The good news is that shin splints usually respond well to the right approach. The less good news is that rest alone often isn't that approach. Plenty of runners rest, feel better, go straight back to their old training and end up exactly where they started. This guide explains why that happens and what to do instead, with a full strength routine and a week-by-week return-to-running plan.
What shin splints actually are
"Shin splints" is a loose term people use for almost any pain in the lower leg. When doctors and physiotherapists use it, they usually mean a specific condition called medial tibial stress syndrome, or MTSS.
MTSS causes pain along the inner (medial) edge of the shinbone, the tibia, usually in the lower half to two-thirds of the bone. The pain is typically spread over an area at least 5 cm long, rather than in one precise spot.
For years shin splints were blamed on inflammation of the tissue covering the bone, where muscles attach. That may play a part, but the current view, summarised in reviews by Maarten Moen and colleagues and by Stuart Warden, Irene Davis and Michael Fredericson, is that MTSS is mainly a bone stress reaction. The tibia bends very slightly with every step. Normally the bone responds by remodelling and getting stronger. If load builds faster than the bone can remodel, it becomes irritated and painful.
That explains why shin splints sit on a spectrum with stress fractures. They aren't the same thing, and most shin splints never turn into fractures. But both come from bone being asked to do more than it can currently handle.
Why bone needs time
Bone is living tissue, constantly being broken down and rebuilt. When you start loading it more (a new training plan, a new season, harder surfaces), the remodelling process actually weakens the bone slightly for a few weeks before it gets stronger. That's the window when bone stress injuries are most likely. Muscles and fitness adapt faster than bone, so you can feel ready for more long before your shins are.
Symptoms: how to recognise them
Typical signs of shin splints include:
- An aching or sharp pain along the inner border of the shin, usually in the lower half.
- Tenderness when you press along that edge of the bone, over a length of several centimetres.
- Pain at the start of a run that may ease as you warm up, then comes back afterwards or the next day.
- In more established cases, pain that lasts the whole run or turns up when walking.
- Often both legs, though one is usually worse.
When it might be something else
Not all lower-leg pain is MTSS. Some causes need a professional assessment, and a couple need it quickly.
| Condition | Where it hurts | What it feels like |
|---|---|---|
| Shin splints (MTSS) | Inner edge of the shin, spread over 5 cm or more | Dull to sharp ache, worse at the start and after running, tender along the bone |
| Tibial stress fracture | One small spot on the bone | Pinpoint tenderness, pain that builds during running, pain at rest or at night, sometimes swelling |
| Chronic exertional compartment syndrome | Muscles at the front or side of the lower leg | Tightness or burning that builds during exercise and eases within minutes of stopping; sometimes numbness or tingling |
| Muscle strain | Calf or shin muscles | Started suddenly during activity; hurts to stretch or contract the muscle |
Pinpoint pain on one small spot of bone you can cover with a fingertip, pain at rest or at night, swelling on the bone, or pain that makes you limp can all point to a stress fracture. Numbness, tingling or a burning tightness that builds with exercise may be compartment syndrome. See a doctor or physiotherapist. You may need an MRI to get a clear diagnosis.
A simple check some clinicians use is the hop test. If you can't hop 10 times on the painful leg without significant pain, a stress fracture becomes more likely and you should get it checked before running again. Don't push through this test if it hurts sharply.
Why shin splints happen
A 2013 systematic review and meta-analysis by Paul Newman and colleagues pulled together the research on risk factors for MTSS in runners. Several stood out, and most of them come back to one idea: load rising faster than the body's capacity.
Training errors
In practice this is by far the most common cause. Typical examples include:
- A big jump in weekly distance, such as starting a marathon plan or a new season.
- Adding speed work, hills or stairs too quickly.
- Switching to harder surfaces, for example moving from grass or a treadmill to concrete.
- Coming back after a break and trying to pick up where you left off.
- Changing to very different shoes, such as much lighter or more minimal ones.
How fast is too fast? The famous "10% rule" (never increase weekly distance by more than 10%) is a reasonable rule of thumb, but the evidence behind that exact figure is thin. A 2008 trial by Ida Buist and colleagues gave novice runners either a standard 8-week programme or a more gradual 13-week programme and found similar injury rates in both groups. A 2014 study by Rasmus Nielsen and colleagues found that novice runners who increased their weekly distance by more than 30% over two weeks had a higher risk of certain running injuries than those who progressed more slowly.
The practical takeaway: steady, predictable increases are safer than big jumps, and the exact percentage matters less than avoiding sudden spikes.
Individual factors
The Newman review found these factors linked to a higher risk of MTSS:
- Higher body mass index (BMI), which increases the load going through the bone.
- Greater navicular drop, a measure of how much the arch flattens when you stand.
- Greater hip external rotation in male runners.
- A previous history of MTSS, one of the strongest predictors.
- Use of orthotics, which probably reflects existing foot problems rather than the insoles causing harm.
Some studies also find higher rates in women, which may be partly explained by differences in bone size and, in some athletes, by low energy availability.
Under-fuelling and bone health
This deserves its own heading because it's so often missed. Runners who don't eat enough to cover their training, as well as those low in vitamin D or calcium, are at greater risk of bone stress injuries in general. It's particularly relevant for female athletes, younger athletes and anyone trying to lose weight while training hard. Missed periods in women and low libido in men can be warning signs. Our nutrition guide covers how much to eat around training.
Treatment: what actually helps
A 2013 systematic review by Marinus Winters and colleagues looked at the available treatments for MTSS. The honest conclusion was that the evidence base is small and no single treatment clearly beats the others. In practice, physiotherapists combine several approaches.
1. Relative rest, not total rest
Complete rest usually makes the pain go away, but it also lets the bone and muscles lose some of the conditioning they had. When you come back, the same load is too much again. Relative rest means cutting running back to a level that doesn't make symptoms worse, while staying active.
A useful guide is the pain-monitoring approach:
- Pain during activity stays at or below about 2 out of 10.
- Any pain has settled by the next morning.
- Pain isn't increasing from week to week.
If all three hold true, the current load is acceptable. If not, reduce it. For some people that means shorter runs; for others it means a couple of weeks with no running at all.
2. Cross-training to keep fitness
Cycling, swimming, pool running, rowing and the elliptical trainer all maintain aerobic fitness with much less impact on the tibia. If you've read our Zone 2 training guide, this is a good time to build your aerobic base on the bike or in the pool. You can come back fitter than you left.
Pool running (running in deep water with a flotation belt) deserves a mention. It's the closest you can get to the running movement with no impact, and many injured runners use it to hold their fitness for weeks.
3. Strength training
Strong calf muscles absorb more of the load with each step, which takes stress off the bone. Strengthening the foot and hip helps control how the leg moves. A 2014 meta-analysis by Jeppe Lauersen and colleagues found that strength training reduced sports injuries substantially across many sports, and did so more effectively than stretching. The full routine is below.
4. Pain relief, used sensibly
Ice for 10 to 15 minutes after activity can ease pain. Short-term over-the-counter pain relief may help, though check with a pharmacist or doctor first, and don't use painkillers to keep running through significant pain. Some clinicians offer shockwave therapy for stubborn cases, with limited but encouraging evidence.
5. Check the basics
Look at your shoes (very worn, or a recent big change), your surfaces and, importantly, your food intake. Make sure you're eating enough overall and getting enough calcium and vitamin D. If you've had more than one bone stress injury, ask a doctor about checking your bone health.
6. Consider a small change in step rate
Some runners land with a long stride and their foot well in front of their body, which increases the load on the leg. A 2011 study by Bryan Heiderscheit and colleagues found that increasing step rate by 5 to 10%, without changing speed, reduced the load at the knee and hip. Its effect on shin pain specifically hasn't been well tested, so treat it as something to try, not a cure. A metronome app set slightly above your normal cadence is an easy way to experiment on easy runs.
Strength exercises for stronger shins
Do these two to three times a week. Start with the easier versions and progress gradually. Mild muscle fatigue is fine; sharp shin pain isn't.
| Exercise | How to do it | Sets and reps |
|---|---|---|
| Double-leg calf raises | Rise slowly onto your toes, pause, lower over three seconds. Progress to single-leg. | 3 × 15 to 20 |
| Bent-knee calf raises | As above, with knees bent about 30 degrees. This targets the soleus, a big shock absorber. | 3 × 15 to 20 |
| Single-leg calf raises off a step | Let the heel drop below the step on the way down. Add weight in a backpack once 25 reps feel easy. | 3 × 12 to 15 each leg |
| Tibialis raises | Lean your back against a wall, heels about 30 cm out, and lift your toes towards your shins. | 3 × 15 to 20 |
| Single-leg balance | Stand on one leg for 30 to 45 seconds. Make it harder by closing your eyes or standing on a cushion. | 3 rounds each side |
| Side-lying leg raises or clamshells | Lift the top leg slowly, keeping hips stacked. Works the muscles on the outside of the hip. | 3 × 15 each side |
| Short foot or towel scrunches | Draw the ball of the foot towards the heel to lift the arch, or scrunch a towel with your toes. | 3 × 10, 5 second holds |
Over several weeks, work up to around 25 single-leg calf raises on each side. That's a common benchmark physiotherapists use for runners coming back to training.
How to progress
Once the bodyweight versions feel easy, start loading. Hold a dumbbell, wear a weighted backpack or use a calf-raise machine at the gym. Heavier, slower calf raises (around 8 to 12 reps) build strength that bodyweight work alone can't. Once you're back to running, plyometric drills such as skipping, gentle hopping and pogo jumps help the leg get used to bouncing again. Add them only when you're pain-free with walking and easy running.
Your return-to-running plan
Once you can walk briskly for 30 minutes and hop gently on the affected leg without pain, you can usually start a gradual return. This walk-run progression is a common template. Run every other day at first, and only move to the next stage if pain stays at 2 out of 10 or below during the session and has settled by the next morning.
| Stage | Session | Total time |
|---|---|---|
| 1 | Walk 4 min, run 1 min × 5 | 25 min |
| 2 | Walk 3 min, run 2 min × 5 | 25 min |
| 3 | Walk 2 min, run 3 min × 5 | 25 min |
| 4 | Walk 1 min, run 4 min × 5 | 25 min |
| 5 | Run 20 minutes continuously, easy pace | 20 min |
| 6 | Run 25 to 30 minutes, easy pace | 30 min |
Some practical rules for this phase:
- Start on softer, flatter surfaces: grass, trails or a treadmill.
- Keep every run easy. No intervals, hills or races until you're back to your previous volume without pain.
- Increase gradually. Once you're running continuously, add a modest amount each week and take an easier week every three or four.
- Keep the strength work going. Don't drop the calf exercises just because you're running again.
- Drop back a stage if pain rises. That's normal, not failure.
Getting back to speed work
Once you've managed two or three weeks at your previous weekly volume with no shin pain, you can start reintroducing intensity. Begin with strides (short, relaxed accelerations of 15 to 20 seconds) at the end of easy runs. Then add one interval session a week, on a soft surface at first. Hills and track sessions come last, because both put extra load through the shins.
Team-sport players
Footballers, basketball players and others need a slightly different final stage. After you're comfortable running continuously, add changes of direction, then sprinting, then jumping and landing, then full training. Each step should feel easy before moving on. Pitch and court surfaces matter: if pain started after a move to artificial turf or a hard indoor court, build up time on that surface gradually.
When to see a professional
Book an appointment with a doctor or sports physiotherapist if:
- You have any of the red flags above (pinpoint pain, night pain, swelling, numbness).
- Pain isn't improving after two to three weeks of reduced load.
- Pain keeps coming back every time you increase training.
- You've had a stress fracture before, or have signs of under-fuelling.
A physiotherapist can assess your strength, running mechanics and training history, and adjust your rehab. If a stress fracture is suspected, an MRI is usually the most useful scan, because X-rays often look normal in the early stages. MRI findings are often graded, which helps guide how long to rest from running.
How to stop shin splints coming back
Because a previous episode is one of the strongest predictors of the next one, prevention matters. These habits help:
- Build volume steadily. Plan training increases in advance rather than deciding on the day based on how you feel.
- Keep two strength sessions a week with calf and hip work, all year.
- Vary your surfaces and add hills, stairs and speed work gradually.
- Change shoes gradually. If you switch to a very different shoe, alternate it with your old pair for a few weeks.
- Eat enough, including carbohydrate, calcium and vitamin D. Under-fuelling is a hidden risk factor for bone stress injuries.
- Listen to early warnings. A slight ache that lingers into the next day is the time to reduce load, not the point where you can no longer run.
- Sleep. Bone remodelling, like every other repair process, depends on recovery.
The bottom line
Shin splints are your bones telling you that load has outpaced recovery. They're common, usually manageable and rarely serious if you respond early. Cut running back to a pain-free level, keep fit with cross-training, build strength in your calves and hips, and come back gradually with a structured plan.
Most of all, be patient. A careful six-week comeback beats three months on the sidelines because you rushed back after two.
Frequently asked questions
How long do shin splints take to heal?
Mild cases often settle in two to four weeks of reduced load. More established cases can take six to twelve weeks or longer. Keeping some running at a pain-free level usually helps more than stopping completely.
Can I run with shin splints?
Often yes, at a reduced level, if pain stays mild (around 2 out of 10 or less) during the run and has settled by the next morning. If pain builds during runs or lingers, cut back further.
Do compression socks help shin splints?
Some runners find them comfortable, but there's no strong evidence they treat or prevent shin splints. They won't do any harm if you like them.
Are shin splints a sign of a stress fracture?
Not usually, but they sit on the same spectrum of bone stress. Pinpoint tenderness, pain at rest or at night, and swelling are red flags. See a doctor, who may arrange an MRI.
Should I get new running shoes?
If your shoes are very worn, or a sudden change in footwear came right before the pain, new or familiar shoes are worth trying. Shoes alone rarely fix the problem.
Can shin splints happen in football or basketball players?
Yes. Any sport with lots of running, jumping and hard landings can cause them, particularly at the start of a season or after a switch to harder pitches or courts.
Sources and further reading
- Winters M, et al. Treatment of medial tibial stress syndrome: a systematic review. Sports Medicine, 2013;43(12):1315-1333.
- Newman P, Witchalls J, Waddington G, Adams R. Risk factors associated with medial tibial stress syndrome in runners: a systematic review and meta-analysis. Open Access Journal of Sports Medicine, 2013;4:229-241.
- Moen MH, et al. Medial tibial stress syndrome: a critical review. Sports Medicine, 2009;39(7):523-546.
- Lauersen JB, Bertelsen DM, Andersen LB. The effectiveness of exercise interventions to prevent sports injuries: a systematic review and meta-analysis of randomised controlled trials. British Journal of Sports Medicine, 2014;48(11):871-877.
- Warden SJ, Davis IS, Fredericson M. Management and prevention of bone stress injuries in long-distance runners. Journal of Orthopaedic & Sports Physical Therapy, 2014;44(10):749-765.
- Nielsen RO, et al. Excessive progression in weekly running distance and risk of running-related injuries: an association which varies according to type of injury. Journal of Orthopaedic & Sports Physical Therapy, 2014;44(10):739-747.
- Buist I, et al. No effect of a graded training program on the number of running-related injuries in novice runners: a randomized controlled trial. American Journal of Sports Medicine, 2008;36(1):33-39.
- Heiderscheit BC, et al. Effects of step rate manipulation on joint mechanics during running. Medicine & Science in Sports & Exercise, 2011;43(2):296-302.
This guide is general education, not a diagnosis or treatment plan. If you have pain that is severe, getting worse or not improving after two to three weeks, see a doctor or physiotherapist. Read our full medical disclaimer.
Photography: Unsplash contributors. Published 2 October 2026, last reviewed 3 October 2026.
