19/10/2026
Piriformis syndrome is a sneaky injury that fools many runners into thinking they have a serious back problem. The piriformis is a small muscle deep in your glutes, and when it becomes tight or irritated, it can compress the nearby sciatic nerve, producing pain, tingling, or numbness that radiates into the buttock and down the leg β closely mimicking true sciatica from the spine.
What aggravates it is telling: prolonged sitting (which compresses and tightens the muscle) and hill running (which demands a lot from the glutes and piriformis) are classic triggers. Many runners notice the pain flares after a long drive or desk day, or after a hilly run. This pattern helps distinguish it from spinal sciatica and points toward the fix β addressing the tight, overworked piriformis and the muscle imbalances around it.
The encouraging news is that piriformis syndrome typically resolves within 4-8 weeks with the right approach: strengthening the glutes so the piriformis isn't overworked, releasing and stretching the tight muscle (foam rolling, targeted stretches), and managing aggravating activities like excessive sitting and hard hill sessions while it calms down. Getting up and moving regularly if you sit a lot makes a real difference. Rather than panicking about your "sciatica," recognize the piriformis pattern, address the glutes and the tightness, and most runners are back to normal within a couple of months.