Every stride of running sends force equal to roughly two to three times your bodyweight up through one leg — through your foot, knee, hip, and pelvic floor — a thousand-plus times per mile. That's why runners love it: it's efficient, it's hard, it works. And it's exactly why postpartum runners are at higher risk of injury and pelvic floor dysfunction when they return too soon: the system that absorbs all that force is the very system pregnancy and birth just remodeled.
The answer isn't "don't run." It's "prove readiness first, then build gradually." Here's the screen I use — the same one built into my programs.
First: the symptom checklist
Before any exercise test, know the red flags. These are the signs your pelvic floor or abdominal wall isn't ready for impact — during the test or during any run:
- Urinary or fecal leakage
- Urinary or fecal urgency
- Heaviness, pressure, or bulging sensation in the pelvis
- Pain during sex
- Coning or doming of the abdomen
- Low back or hip pain
Any of these appearing during the exercises below is a "not yet" for that test — not a failure, a data point. And any of these persisting in daily life is a reason to see a pelvic floor PT before pursuing impact at all. Running on top of these symptoms doesn't toughen them; it deepens them.
"Can I run?" is really five questions: can you balance, hold, stabilize, produce force, and absorb impact — on one leg, without symptoms.
The readiness test
Complete everything below — 2 rounds each — without symptoms, wobbles, or form breakdown. Spread it over a day or two if needed. General timing context: most pelvic health guidelines put return to running around 3+ months postpartum at the earliest, and only once a foundation like the Rebuild is in place. The calendar is a floor, not a green light — the test is the green light.
Part 1 — Core endurance
Test 1
Dead Bug — 10 reps/side
Pass standard: no pain, no midline coning, no back wobble
On your back in neutral, opposite arm and leg extend on a slow exhale. Your pelvis stays still, your midline stays quiet, your breath keeps moving. This is running's arm-leg opposition pattern, lying down.
Test 2
Side Plank — 30 seconds/side
Pass standard: hold without hips dropping
Lateral core endurance — the tissue that keeps your pelvis level mid-stride. Modify to knees-down only if you're using this as training; the test standard is the full version.
Part 2 — Pelvic stability
Test 3
Single-Leg Elevated Bridge — 10 reps/side
Pass standard: pelvis stays equal and level, free leg straight
Foot on a step or couch edge, other leg extended, lift your pelvis without it tipping toward the free side. Glute max strength plus pelvic control — the engine of your stride.
Test 4
Side Plank + Leg Raises — 10 reps/side
Pass standard: smooth reps, hips high, no shaking collapse
The side plank you just held, now with your glute med lifting the top leg. If this one's ugly, your single-leg stance phase — which is 100% of running — needs work first.
Part 3 — Balance
Test 5
Running Man Balance — 10 reps/side
Pass standard: 10 slow reps without losing balance
Standing on one leg, drive the other knee and opposite arm through a slow running motion. Balance is the quiet prerequisite: running is just balance, repeated at speed.
Test 6
Lateral Step Down — 10 reps/side
Pass standard: pelvis level throughout, no knee dive inward
From a step, lower one heel slowly toward the floor and return. Eccentric single-leg control — exactly what absorbs each landing when you run downhill or fatigue.
Part 4 — Single-leg strength
Test 7
Single-Leg Calf Raises — 10 reps/side
Pass standard: full heel height on every rep, no fading
Your calves absorb and return more running force than almost anything else. Ten tall, honest reps per side — the last one as high as the first.
Part 5 — Impact
Test 8
Single-Leg Hops — 20 reps/side
Pass standard: knee lands over foot (no inward collapse), zero symptoms
The moment of truth: repeated impact on one leg. This is where leaking or heaviness shows up if the pelvic floor can't yet manage load — better to learn it here, barefoot in your living room, than at mile two.
Test 9
Lateral Bounds — 10 reps/side
Pass standard: 10 bounds without wobbling or knee collapse
Side-to-side power and landing control — force absorption at angles, the final proof your system can handle the chaos of real-world running (curbs, dodging toddlers, uneven ground).
Scored it? Here's what it means
Passed everything, symptom-free: you're cleared by your own body. Start with walk-run intervals (say, 1 minute easy jogging / 2 minutes walking, 20 minutes total), keep it to every other day, and progress one variable at a time. Monitor the symptom checklist for 24 hours after each run — symptoms that show up the next day count too.
Failed one or two tests: congratulations, you just found your training plan for the next 3–4 weeks. Train the specific failures (they're all trainable — that's the point of them), then retest. This is faster than the alternative, which is running anyway and rehabbing an injury for three months.
Symptoms on any test: pause the running goal and go two steps back: pressure strategy and foundations (breath, pelvic floor, the early program phases) — and book a pelvic floor PT if symptoms are consistent. I'm a fitness specialist, not a clinician: persistent leaking, heaviness, or pain deserves an individual assessment, and runners in particular get enormous value from one internal exam before building mileage.
Why the test beats the calendar
"Wait until 3 months" and "wait until 6 months" both miss the actual variable: capacity. One woman passes everything at 14 weeks because she rebuilt methodically; another needs 8 months after a fourth-degree tear. Neither is ahead or behind — they're just different bodies with different loads to absorb. Test, train the gaps, retest. The calendar can't leak; your pelvic floor can.
FAQ
I passed at 10 weeks postpartum. Can I start running?
Passing early is a great sign — pair it with your provider's clearance and start conservatively (walk-run, flat ground, every other day). The 3-month guideline exists because tissue remodeling continues regardless of how strong you feel; being strong and patient is the winning combination.
A little leaking during runs is normal though, right?
Common, not normal — and not something to run through. Leaking is load exceeding capacity, and continuing to add load trains the dysfunction deeper. Drop back to the test, find the gap, and consider a pelvic floor PT. Most postpartum runners can get to leak-free; settling for less is unnecessary.
Do I need to retest if running feels fine?
The 24-hour symptom check after each run is your ongoing test. Retest formally when you jump mileage or intensity, return after a break, or notice any checklist symptom creeping back in.
I'm years postpartum and never did any of this — still relevant?
Completely. If you have any checklist symptoms while running now, this test finds the weak link regardless of your baby's age. The rebuild works at any distance from delivery.
Fail a test? That's just your program.
The Rebuild builds exactly these capacities in order — and the library's strength classes take you from passing the test to loving your runs. First week free.
Start Week One
Em is a prenatal and postpartum fitness specialist and the founder of motherbuilt. She teaches technique-first programs covering pregnancy (weeks 1–40) and the postpartum rebuild. Find her on Instagram at @birthreadymama.