DIASTASIS RECTI & ABDOMINAL WALL REHABILITATION · STAFFORD, VA
Returning To Running After Having A Baby
Running is one of the highest-impact things a postpartum body is asked to do, and it is often the first thing attempted, usually against a calendar rather than a readiness check. This page explains what your body should be able to tolerate before mile one, why those criteria exist, and what tends to happen when they're skipped.
The most common way postpartum runners get hurt is not by running too hard: it is by running before the support system that manages impact has been rebuilt. What that system needs to do first is on this page.
READINESS, NOT A DATE
Returning To Running After Having A Baby
The useful question is not a date but a readiness one: whether your body currently tolerates the load. Common markers include walking comfortably for around thirty minutes, good single-leg control, and impact tolerance without leaking, heaviness or pain. The 2019 postnatal guideline advises against returning to running before three months, and suggests three to six months at the earliest.3 Many people need longer; the body decides, not the calendar.
At Divine Physical Therapy that readiness is assessed in your own home in Stafford County or Fredericksburg, one-on-one, so the plan is built around your actual body rather than a generic timeline. HSA and FSA cards may be used when your plan permits.
Reviewed by Dr. Thea Paige, PT, DPT, CMTPT, PCES (about Dr. Paige).
THE MECHANISM
Why Does Running Need Criteria At All?
Because running is not walking sped up: it is a series of single-leg landings, each sending an impact force of roughly 1.6 to 2.5 times body weight through a body that has spent nine months reorganizing how it manages pressure and load.1 Walking keeps one foot on the ground; running does not. The demand is categorically higher, and the postpartum pelvic floor and deep core have to meet it in milliseconds.
This is why "I feel fine walking" does not predict "I'll be fine running." The systems that fail under impact (rapid pressure management, single-leg stability, and load tolerance under fatigue) are precisely the ones walking never tests. Clearing them before mile one is not caution for its own sake; it is checking that the equipment can handle the job before the job starts.
SELECTED EVIDENCE: A systematic review of urinary incontinence in female athletes found high-impact exercise carried a 4.59-fold higher risk of pelvic floor dysfunction than low-impact exercise.2 The three capacities that decide whether the body can meet that demand (load tolerance, single-leg control, and impact tolerance under fatigue) are exactly the ones walking never challenges, which is why feeling fine on a walk tells you almost nothing about mile one.
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THE THREE CAPACITIES
What's Worth Clearing Before Your First Postpartum Mile?
Three capacities, at the mechanism level rather than any single test. The first is load tolerance: the deep core and pelvic floor being able to accept and return force without symptoms creeping in. The second is single-leg control: the stability to stand, squat and hop on one leg without the pelvis dropping or the knee caving, because every running stride is a single-leg event. The third is impact tolerance: the ability to hop, bound and jog in place without leaking, heaviness or pain, and to keep tolerating it as fatigue builds, since symptoms that appear only at the end of a run are load-tolerance limits showing themselves.
None of this is a stopwatch or a rep count: it is a picture of whether the support system does its job under progressively real demand. This framework did not come from nowhere. In 2019 Goom, Donnelly and Brockwell published the first guideline setting out load, strength and impact screening for postnatal runners,3 and in 2022 Christopher and colleagues built it into a four-phase rehabilitation progression in the Journal of Women's Health Physical Therapy.4 Together they moved the profession away from "six weeks and you're cleared" toward "cleared when the body clears it." Both are candid that much of this rests on expert consensus rather than trial evidence (the screening recommendations are graded Level 4), which is a reason to assess the person in front of you rather than apply a protocol. Dr. Paige runs that assessment with you and tells you specifically where the limitation is, rather than issuing a blanket yes or no.
“The runners I see are rarely reckless; they are motivated, and they were handed a date instead of a readiness check. Here is the pattern I have watched play out for years: the return goes fine for two or three weeks, then the leaking or the heaviness arrives at the end of the long run, and by then it feels like a setback rather than information. When I assess someone before that first mile, I am not looking for a reason to hold them back. I am looking for the one link in the chain that will give out at week three, so we can build it now instead of discovering it the hard way.”
Dr. Thea Paige, PT, DPT, CMTPT, PCES
SIGNALS, NOT VERDICTS
What Do Leaking And Heaviness While Running Actually Mean?
They are signals, not verdicts, and they are common: reported rates of stress urinary incontinence among female runners range from roughly 26% to 41%, and that likely understates it, since many runners never mention it.5 Common is not the same as normal, and it usually points to timing and load tolerance rather than damage or weakness. Leaking during a run typically means the pelvic floor is strong enough but arriving late to the millisecond pressure spike that impact creates; the muscles are there, the coordination isn't yet. This is a trainable problem, and it rarely means running has to stop entirely; the deeper explanation lives on our urinary incontinence page.
Heaviness that shows up only at the end of a workout is one of the most useful signals there is: it marks where your current load ceiling sits. Your support system manages pressure well until fatigue accumulates, then manages it less well. That tells us exactly what to build toward. Neither symptom is something to push through in the hope it fades: pushing through a load-tolerance limit is how a manageable signal becomes a stubborn one.
DIASTASIS AND RUNNING
Can You Run With A Diastasis?
Usually, yes, with the right preparation. A diastasis is not a barrier to running in itself; what matters is whether the abdominal wall can generate tension and manage pressure under impact, not the width of any gap. Two runners with identical measurements can have entirely different capacity, which is why the assessment looks at how the tissue behaves under load rather than at a number. The 2019 guideline puts it directly: a mother can return to running with a diastasis if it is functional, that is, if she has strategies to control intra-abdominal pressure and transfer load across the abdominal wall.3 The full picture is on our diastasis recti page.
All of this sits inside a wider postpartum plan: the pelvic floor, the deep core and the return to impact are one connected project, described across postpartum physical therapy and the practice's pelvic health and postpartum physical therapy service. And if a running-specific issue like knee or shin pain shows up as the mileage climbs, it is treated with the same load-first lens on our running injuries page. One clinician, home to first mile.
WHAT THE RESEARCH ACTUALLY SAYS
Three Numbers Worth Knowing Before Mile One.
1.6–2.5×
Body weight traveling through the body on each running stride, at a moderate pace, a load walking never generates.
Gottschall & Kram, J Biomech 2005 (reference 1)
4.59×
Higher risk of pelvic floor dysfunction with high-impact exercise than with low-impact exercise, across a systematic review of female athletes.
De Mattos Lourenco et al., Int Urogynecol J 2018 (reference 2)
51–59%
Of its original tensile strength that abdominal fascia has regained by six weeks after a cesarean, rising to 73-93% at six to seven months.
Ceydeli et al., Curr Surg 2005 (reference 6)
That last figure is the one that surprises people most. The six-week appointment is a check that healing is underway, not a finding that tissue has returned to full strength. Recovery of the pelvic floor and its supporting structures continues for months after it.7
HOW A RETURN-TO-RUNNING ASSESSMENT WORKS HERE
Four Questions Your Body Answers Before Mile One.
01
Can It Accept Load?
The deep core and pelvic floor taking and returning force without symptoms, the foundation everything else is built on.
02
Can It Stand On One Leg?
Single-leg stability without the pelvis dropping or the knee caving, because every stride is a single-leg landing.
03
Can It Take Impact?
Hopping, bounding and jogging in place without leaking, heaviness or pain, and holding up as fatigue builds.
04
What's The Weak Link?
The one capacity most likely to give out at week three, built up now, deliberately, instead of discovered later.
REFERENCES
Every Figure On This Page Is Traceable.
These are the sources, listed so you can read them yourself rather than take our word for it.
01. Gottschall JS, Kram R. Ground reaction forces during downhill and uphill running. Journal of Biomechanics. 2005;38(3):445-452. Cited for ground reaction forces of 1.6-2.5 times body weight at a moderate running speed of about 11 km/h.
02. De Mattos Lourenco T, Matsuoka PK, Baracat EC, Haddad JM. Urinary incontinence in female athletes: a systematic review. International Urogynecology Journal. 2018;29(12):1757-1763. Reported a 4.59-fold increased risk of pelvic floor dysfunction with high-impact compared with low-impact exercise.
03. Goom T, Donnelly G, Brockwell E. Returning to running postnatal: guidelines for medical, health and fitness professionals managing this population. March 2019. Free full text. Source of the 3-month minimum, the 3-6 month window, the load-and-impact screen, and the functional-diastasis position. Screening recommendations are graded Level 4 (expert consensus).
04. Christopher SM, Gallagher S, Olson A, Cichowski S, Deering RE. Rehabilitation of the postpartum runner: a 4-phase approach. Journal of Women's Health Physical Therapy. 2022;46(2):73-86. doi:10.1097/JWH.0000000000000230.
05. Reported ranges for stress urinary incontinence in female runners, summarized in the postpartum-runner literature; see also Blyholder L, Chumanov E, Carr K, Heiderscheit B. Exercise behaviors and health conditions of runners after childbirth. Sports Health. 2017;9(1):45-51. doi:10.1177/1941738116673605.
06. Ceydeli A, Rucinski J, Wise L. Finding the best abdominal closure: an evidence-based review of the literature. Current Surgery. 2005;62(2):220-225. Source of abdominal fascial tensile-strength recovery figures after cesarean delivery, as cited in the 2019 postnatal guideline.
07. Staer-Jensen J, Siafarikas F, Hilde G, Benth JS, Bo K, Engh ME. Postpartum recovery of levator hiatus and bladder neck mobility in relation to pregnancy. Obstetrics & Gynecology. 2015;125(3):531-539.
KEEP READING
Where To Go Next
Rebuilding the system after birth, the foundation for running.
Diastasis Recti
Why tension under load matters more than the width of the gap during movement and exercise.
YOUR QUESTIONS, ANSWERED
Frequently Asked
BEGIN WITH A DISCOVERY CALL
Get Cleared By Your Body, Not By The Calendar.
Start with a free discovery call. Whether you're planning your first postpartum run or already running with symptoms, Dr. Paige will tell you plainly what an assessment would look for, and what it could change.