How to Start Running After Having a Baby
(The Honest Guide)

There's a moment, usually somewhere between six and twelve weeks postpartum, when you start thinking about running again. Maybe it's because you walked past your trainers. Maybe you saw someone out on an early morning run and felt something stir. Whatever it was, here you are.

And the internet is about to make this much more complicated than it needs to be.

This guide won't do that. Starting running after having a baby is genuinely manageable, but there are a few things worth knowing before you lace up. I'll walk you through them.

First: When is it safe to start running again?

The old advice was "six weeks and you're good." That's been revised significantly. Current guidelines, backed by physiotherapy research, suggest at least 12 weeks postpartum before returning to running, regardless of how you feel.

After a caesarean, many women's health physios recommend waiting 16–20 weeks. Your core and pelvic floor have done an enormous amount of work, and they need time that isn't visible from the outside.

Before you run: Get a check-up with a women's health physiotherapist, not just your GP. They can assess your pelvic floor function directly, which a standard six-week check doesn't do. This single appointment can save you months of problems.

If you're not sure where to find one, search "women's health physio" plus your suburb. Most Australian capital cities have several options, and many offer telehealth if location is tricky.

What to do before you run

The gap between giving birth and running isn't a waiting room. There's actually useful work you can do in that time.

Reconnect with your pelvic floor

Not doing kegels aggressively. Just paying attention. Breathe into your belly, feel your pelvic floor release on the inhale, gently lift on the exhale. Do this lying down for 5 minutes a day. It builds the foundation running sits on.

Walk before you run

Seriously. A 30-minute walk done consistently for 4–6 weeks prepares your body far better for running than jumping straight into intervals. It's not "just walking". It's loading your joints, rebuilding your aerobic base, and testing how your pelvic floor responds to impact.

Work on your posture

Feeding, carrying, and leaning over a pram all tighten the chest and round the shoulders. A few minutes of chest stretching and gentle thoracic rotation each day pays off enormously when you return to running upright.

How to start running after baby: the gradual approach

When you're cleared and ready, don't start with a run. Start with walk-run intervals.

A structure that works well:

Easy effort means you can hold a conversation. If you can't talk comfortably, slow down. This isn't a tempo run. You're rebuilding infrastructure.

The warning signs to stop: Leaking (any amount), heaviness or pressure in your pelvis, pain during or after a run, or any feeling that something "isn't right." These are signals to ease off and check back with your physio, not to push through.

What to expect when you start running after a baby

Your first few runs will probably feel harder than you expect. That's normal. Your aerobic fitness drops off quickly during pregnancy, and the sleep deprivation that follows doesn't help your recovery.

Two things that help most new parents:

Running while breastfeeding

Yes, it's safe. A few practical things help:

Running with a pram

Pram running is a completely valid option, and a great way to fit training around a baby who won't nap unless they're moving. A few things to note:

Frequently asked questions

How long after having a baby can I start running?
Most guidelines suggest waiting at least 12 weeks postpartum before running, regardless of how you feel. After a caesarean, many physios recommend 16–20 weeks. Always get clearance from your GP or women's health physio first.
Is it safe to run while breastfeeding?
Yes, running while breastfeeding is generally safe. Wear a supportive sports bra, stay well hydrated, and feed or express before your run if breast fullness is uncomfortable. Some babies are fussy after very intense sessions due to lactic acid in milk, a light run is usually fine.
What is the return to running guideline?
The widely accepted return-to-running guideline (Groom, Donnelly & Brockwell, 2019) recommends a graduated 12-week programme starting with walking, then walk-run intervals, then continuous running, assessed against pelvic floor symptoms at each stage.
I had a c-section. When can I run?
After a caesarean, the general recommendation is to wait 16–20 weeks before running. Your abdominal wall needs more time to heal than after a vaginal birth. A women's health physio can assess your scar tissue and core function before you return.

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RK
Ryan Kirwan
Ryan is a certified running coach and ultra marathoner who built Building Balance to help parents find their way back to running. Get his free 4-week starter plan or follow along on Instagram.