Plantar fasciitis in runners

The plantar fascia supports the sole as the foot absorbs and transfers force. Increasing distance, speed, hills, or running frequency too quickly can raise that load before the tissues adapt. A change in shoes, running surface, stride, or strength routine may also alter pressure through the heel and arch. Pain is often most noticeable with the first steps after sleep or sitting, then may return during or after a run. These features can fit plantar fasciitis, but they do not exclude stress injury or another cause.

Reduce or pause the activity that clearly increases pain, while keeping comfortable low-impact movement if appropriate. Avoid testing the foot with a hard run immediately after a painful day. Check that running shoes remain comfortable and structurally supportive, and avoid making several training changes at once. Gentle calf and foot exercises can help when prescribed or demonstrated by a physiotherapist. Resume running with short, easy sessions and increase one training factor at a time only when symptoms remain settled during daily walking.

Arrange an assessment if pain changes your stride, prevents normal walking, or fails to improve after training modification. Seek prompt care for sudden severe pain, inability to bear weight, substantial swelling, bruising, warmth, or numbness. A clinician can examine the heel and arch and decide whether imaging or a different rehabilitation approach is needed.

Ask which running sessions should be changed first, what strength or mobility work suits you, and what symptoms should guide a return to training. Discuss shoe choice, running surfaces, recovery between sessions, and whether another injury could explain the pain.