How to Breathe When Running Properly
If you’ve ever struggled to catch your breath during a run, you’ve probably wondered: how should you breathe when running? I know when I started I didn’t know how to breath. Should I be breathing through my nose, mouth or combination of both. I’m still not sure I’m doing it right all the time but hopefully the following will help.
Breathing properly while running can make your workouts feel easier, improve endurance, and reduce side stitches. Yet many never learn correct breathing technique — they simply run until they feel out of breath.
The good news is that proper breathing when running is simple to learn. With a few small adjustments, you can run more efficiently and comfortably.
In this guide, you’ll learn:
- The best breathing technique for running
- Whether to breathe through your nose or mouth
- How to avoid getting out of breath
- How to prevent side stitches
- How to build better endurance over time
Why Breathing Technique Matters in Running
When you run, your muscles demand more oxygen. Your lungs and cardiovascular system must work harder to deliver it efficiently.
Poor breathing technique can cause:
- Early fatigue
- Increased heart rate
- Side stitches
- Tight shoulders and tension
- Reduced endurance
Efficient breathing helps you:
- Run longer without exhaustion
- Maintain a steady pace
- Improve oxygen delivery
- Stay relaxed and controlled
Breathing is automatic — but improving it is intentional. The more you practice to breath correctly the more naturally it becomes. It’s like anything practice is key to improving your technique.
Should You Breathe Through Your Nose or Mouth When Running?
One of the most common questions is: Is it better to breathe through your nose or mouth when running?
The Short Answer: Use Both
- Easy runs: Nose and mouth breathing
- Moderate to hard runs: Primarily mouth breathing
Nasal breathing works well at low intensity because it slows airflow and encourages deeper breaths. However, during faster running, your body requires more oxygen than your nose alone can supply.
Mouth breathing allows:
- Greater oxygen intake
- Faster carbon dioxide release
- More efficient breathing at higher speeds
Trying to rely only on nasal breathing during intense efforts often leaves runners feeling restricted. It does depend on the circumstances, and when you are first starting out it’s important to do what you are most comfortable with. You want to feel as relaxed as possible and not struggling to breath.
Use Diaphragmatic (Belly) Breathing
The most effective breathing technique for running is diaphragmatic breathing, also known as belly breathing.
Many runners use shallow chest breathing, which limits oxygen intake and increases tension.
How to Practice Belly Breathing
- Place one hand on your stomach.
- Inhale deeply so your stomach expands.
- Exhale fully so your stomach falls.
Your chest should move less than your abdomen.
Why This Works
- Increases oxygen efficiency
- Reduces upper body tension
- Lowers risk of side stitches
- Improves endurance
Practice this technique while walking or during easy runs until it becomes natural. This can also help with anxiety either will running or just in general so is really useful to learn.
Find a Breathing Rhythm While Running
Using a breathing rhythm improves efficiency and helps balance impact stress on your body.
Popular Running Breathing Patterns
2:2 Pattern (Moderate Pace)
- Inhale for 2 steps
- Exhale for 2 steps
3:3 Pattern (Easy Pace)
- Inhale for 3 steps
- Exhale for 3 steps
2:1 Pattern (Hard Efforts)
- Inhale for 2 steps
- Exhale for 1 step
A consistent rhythm prevents irregular gasping and helps regulate effort.
If you’re unsure whether you’re breathing correctly, try syncing your breath with your foot strikes.
How to Stop Getting Out of Breath When Running
If you constantly feel breathless, the issue is often pacing — not your lungs.
1. Slow Down
Use the “talk test”:
- Easy pace = you can speak in short sentences
- Too fast = you can only say a few words
Most beginners run too fast, which leads to heavy breathing. I know what that feels like and you need to take it easy when starting out and pace yourself. Never go out too quick but possibly finish quick if you are able.
2. Build Your Aerobic Base
Consistent easy runs improve cardiovascular efficiency. Over time, your breathing becomes smoother and more controlled. The more you do it the easier it will get.
3. Relax Your Upper Body
Tension restricts breathing. Focus on:
- Dropping your shoulders
- Unclenching your jaw
- Keeping hands relaxed
- Maintaining upright posture
If you are relaxed then you will breathe better and more naturally. It’s important to be comfortable with what you are doing and not really struggling and trying to catch your breathe. Sometimes I find that I’m really tense in my shoulders and those effects many things include breathing. The more you relax the easier it will get including keeping your arms and hands relaxed also.
How to Prevent Side Stitches While Running
Side stitches are commonly linked to shallow breathing and poor rhythm.
To reduce your risk:
- Avoid large meals 1–2 hours before running
- Warm up properly
- Practice deep belly breathing
- Maintain a steady breathing rhythm
If you develop a stitch:
- Slow down
- Take deeper controlled breaths
- Gently press on the affected area while exhaling
Most side stitches fade quickly with controlled breathing. I’ve found that controlling what you eat and when you eat is important here. Try not to eat close to going out running and also try not to eat anything large and rich which will be difficult to digest.
How Long Does It Take to Improve Breathing When Running?
Breathing efficiency improves with consistent training.
Within 3–6 weeks of regular running, most runners notice:
- Easier breathing at the same pace
- Lower heart rate
- Improved endurance
- Reduced breathlessness
As your aerobic fitness improves, breathing becomes more automatic and controlled. The more you practice the quicker your breathing will become more natural and you will feel better for it.
Conclusion: Master Your Breathing, Improve Your Running
Learning how to breathe when running can transform your performance and comfort.
Remember:
- Use both nose and mouth
- Practice diaphragmatic breathing
- Find a steady rhythm
- Slow down if you’re constantly breathless
- Stay relaxed
Running shouldn’t feel like a struggle for air. With proper breathing technique, you’ll feel more in control, run longer, and recover faster.
At Icon Running, we believe small improvements create big performance gains — and mastering your breathing is one of the most powerful upgrades you can make.
