Returning to Running After an Injury

The principle — rebuild gradually

The single biggest predictor of running injury is how *fast* training load rises relative to what your body is currently prepared for¹. That's the same logic that governs a good comeback: raise load steadily and avoid the spikes. Time off costs you some fitness and some tissue capacity, so the load your body could handle before the injury is not the load to restart at.

Why the first weeks back are the riskiest

Two things stack up early. Detraining means muscles, tendons, and especially bone have lost some of the capacity they had — and eagerness pushes you to add volume fast. That mismatch between load and current capacity is exactly what caused the original injury, which is why the comeback is the time to be *most* conservative, not least.

How to come back — the general playbook

The details depend on the injury, but the shape is consistent:

• Start below where you stopped: a common starting point is roughly half your pre-injury volume, run at an easy effort.
• Build in small steps: increase gradually (often cited as around 10% a week), with easier weeks mixed in, and let how you feel the next day — not the calendar — set the pace.
• Walk-run if needed: alternating walking and running eases the return to impact, particularly after a longer layoff or a bone injury.
• Keep fitness with cross-training: cycling, swimming, pool running, or the elliptical maintain your aerobic base while impact tolerance rebuilds.
• Reintroduce the hard stuff last: bring back speed, hills, and long runs only once easy volume is solid — and change one thing at a time.
• Let symptoms guide you: mild discomfort that settles quickly and isn't worse the next day is usually fine; pain that rises during a run or lingers means back off.

Bone injuries need extra patience

A return from a bone stress injury is slower and more cautious than a soft-tissue comeback, and it should follow the graded plan your clinician gives you. Bone needs time to rebuild capacity, and rushing it is the classic way a healing stress injury becomes a setback.

When to get guidance

For anything more than a minor ache — and always for a diagnosed injury — a physical therapist's return-to-run plan is tailored to the specific tissue and timeline. See someone if pain comes back every time you build up, or you're unsure whether you're ready to progress.