Table of Contents
- Why a Side Stitch Strikes When You Run
- How to Get Rid of a Stitch When Running
- How to Breathe When Running to Avoid a Stitch
- Eating Before Running and Side Stitches
- The Running Warm-Up to Prevent Stitches
- Building a Stitch-Proof Running Routine
- Frequently Asked Questions
Last Updated: 21 October 2026
Why a Side Stitch Strikes When You Run
A side stitch is a sharp, stabbing pain just below the ribs that hits mid-run and can stop you in your tracks. Learning how to avoid side stitch when running starts with understanding why it happens. At The Running Bug, we hear about this from new runners constantly, and the good news is that it is rarely a sign of anything serious.
It is one of the most common complaints among recreational runners. The pain usually settles on one side, often the right, and eases when you slow down.
But most guides get the cause wrong. They blame “lack of fitness” and tell you to push through. That advice rarely works.
What Is Actually Causing That Stitch
A side stitch is a cramp in the diaphragm or the surrounding abdominal muscles, often linked to how you breathe and what sits in your stomach. The diaphragm is the large muscle under your lungs, and it works hard when you run. Managing your intake before a session is just as vital as regulating your breath, as avoiding stomach issues remains a fundamental component of maintaining a consistent and comfortable pace.
Two things tend to trigger it:
- Shallow, rapid breathing that under-works the diaphragm
- A full stomach pulling on the ligaments around it
When you run, your organs bounce. A heavy meal or a big drink sloshes against the diaphragm and tugs at the ligaments holding it in place. The result is that familiar stabbing feeling.
Who Gets Stitches Most Often
New runners get stitches more than anyone else. Your breathing rhythm is still settling, and you may be running faster than your body is ready for.
But experienced runners are not immune. Anyone who eats too close to a run, skips a warm-up, or suddenly picks up the pace can get one.
A common mistake is assuming stitches mean you are unfit. In practice, they usually mean your breathing and your pre-run fuelling are out of sync. Fix those two things and most stitches disappear.
How to Get Rid of a Stitch When Running
The fastest fix is to slow down and change how you breathe. Stop pushing through the pain. Ease your pace, then focus on steady, deep breaths.
Here is what to do the moment a stitch hits:
- Slow to a walk or an easy jog
- Breathe in deeply through your nose and out through your mouth
- Press your hand gently into the painful spot
- Straighten your posture and lift your chest
- Stretch the sore side by reaching the same-side arm overhead
Most stitches fade within a minute or two once you slow down and breathe. If the pain is sharp and does not ease when you stop, get it checked by a doctor. That is rare, but worth knowing.
How to Breathe When Running to Avoid a Stitch
Breathing is the single biggest lever you control. The trick is to breathe from your belly, not your chest, and to keep a steady rhythm.
Shallow chest breathing leaves your diaphragm under-used and easy to cramp. Belly breathing fills your lungs fully and keeps the muscle working smoothly.
The Breathing Pattern That Helps
Try the 3:2 pattern. Breathe in for three steps, then out for two. This rhythm keeps your breaths deep and regular, and it stops the quick, panicky breathing that sets off stitches.
A simple way to build the habit:
- Start each run with two minutes of easy jogging on the 3:2 pattern
- Keep your shoulders relaxed and your chest open
- Breathe in through your nose if you can, out through your mouth
NHS guidance on breathing and exercise is a useful starting point if you want to understand how breathing affects exertion.
Eating Before Running and Side Stitches
What and when you eat before a run matters more than most people realise. A large meal too close to your run is a classic trigger.
The fix is simple: give your food time to settle. Aim for a light snack about 90 minutes before you head out, or a proper meal two to three hours before.
Good pre-run options include:
- A banana or a small handful of oats
- A slice of toast with a little honey
- Water sipped steadily, not gulped
Heavy, fatty or very sugary foods sit in the stomach longer and are more likely to cause a stitch. Save the big meal for after your run.
Drinking a large volume of water right before you run is a common mistake. It sloshes in the stomach and tugs on the diaphragm. Sip small amounts before you go and rehydrate properly afterwards.
The Running Warm-Up to Prevent Stitches
A proper warm-up prepares your diaphragm and core for the work ahead. Skip it and you go from resting breathing straight into running breathing, which is exactly when stitches strike.
Spend five to ten minutes easing in:
- Two to three minutes of brisk walking
- One minute of easy jogging
- A few gentle torso twists and side stretches
- Slow, deep belly breaths to wake up the diaphragm
The aim is not to tire yourself out. It is to raise your heart rate gradually and get your breathing into a rhythm before you settle into your run pace.
Building a Stitch-Proof Running Routine
Consistency beats intensity when you are trying to stop stitches for good. Build a routine that respects your breathing, your fuelling and your warm-up every time you run.
Here is how we would structure a week:
| Habit | When | Why It Helps |
|---|---|---|
| Light snack | 90 minutes before a run | Gives food time to settle |
| Belly-breathing warm-up | Before every run | Prepares the diaphragm |
| 3:2 breathing rhythm | During the run | Keeps breaths deep and steady |
| Easy pace on long runs | Most sessions | Reduces strain on the diaphragm |
| Slow-down drill | When a stitch hits | Stops the pain fast |
The real difference between runners who keep getting stitches and those who do not comes down to routine. Small habits, repeated, do the work.
At The Running Bug, our virtual challenges are built for exactly this kind of steady progress. You can run anywhere, at any time, and work through distances from 5k up to a marathon at your own pace. Every run you submit earns you a medal, and you can raise funds for charity along the way. It is a low-pressure way to build the consistency that keeps stitches away.
NHS physical activity guidelines and UK Chief Medical Officers’ activity guidance both back the idea that regular, sensible movement is the foundation of fitness.
Frequently Asked Questions
Should you stop running if you get a side stitch?
Not always. Most runners can ease a stitch by slowing to a walk or jog, breathing deeply into the belly and pressing gently on the painful area for 30 to 60 seconds. Stopping completely is rarely necessary unless the pain is sharp and does not ease. If a stitch keeps returning on the same run, walk for a few minutes and restart at an easier pace. Seek medical advice if pain is severe, one-sided and persistent, or comes with nausea, since that can point to something other than a stitch.
How long does a side stitch usually last?
A typical stitch eases within one to five minutes once you slow down and change your breathing. Runners who keep pushing through at the same pace often find it lingers for ten minutes or more. The quicker you respond, the shorter it tends to be. Practising belly breathing and a proper running warm-up to prevent stitches reduces how often they appear in the first place, which matters more than how fast you recover from one.
Does eating before a run cause a side stitch?
It can. A large or heavy meal within two to three hours of running is a common trigger, especially foods high in fat, fibre or sugar. The stomach stays full and pulls on the ligaments supporting it, which is thought to contribute to that dragging pain under the ribs. Try a light snack 60 to 90 minutes before you head out, keep it low in fat and fibre, and note what you ate whenever a stitch appears so you can spot your own pattern.
When should you seek medical advice for pain during a run?
Get checked if the pain is sharp, lasts more than a few hours after you stop, or is always in the same spot. See a GP urgently if you also have chest pain, breathlessness at rest, nausea, fever or pain that wakes you at night. A stitch should ease when you slow down and change your breathing. Pain that does not follow that pattern, or that gets worse with each run, is worth investigating rather than running through.
A side stitch can feel like a wall, but it is a habit problem more than a fitness problem. Fix your breathing, watch what you eat before a run, and always warm up properly. Then build the routine.
At The Running Bug, we help runners stay motivated with flexible virtual races, stylish medals for every finish, and a community that keeps you going when the schedule gets busy. Create an account and get 15% off your first race, then start building a stitch-proof routine today.