Most Runners Make This IT Band Mistake—And It Makes It Worse

October 10, 2025 | By

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You’ve put in the work. Your aerobic base is solid, you’re crushing hill sprints, and that race distance is starting to feel within reach. Then it hits: a nagging, weird ache on the outside of your knee that sometimes creeps all the way up to your hip. It flames up on downhills and gets worse with every mile. You foam roll the living daylights out of your leg, and it helps… until it doesn’t.

Listen to audio podcast below on your next run or watch the video above to learn more

“The ITB is strong and thick. You can’t stretch it by foam rolling.”

Stop Foam Rolling the Wrong Thing

Your first instinct is probably to grab a foam roller and attack the side of your thigh. I’m here to tell you to please, stop. The iliotibial band (ITB) is incredibly thick, resilient fascia. Research shows it barely stretches, even under a huge amount of force. You’re just bruising yourself for no reason. It’s like trying to loosen a tight rope by rubbing the middle of it instead of adjusting the pulley that’s creating the tension in the first place.

The Real Culprits: Your TFL and Glutes

The IT band isn’t a muscle; it’s a band of connective tissue that originates from two muscles: the tensor fasciae latae (TFL), a small muscle on the front/side of your hip, and your gluteus maximus. When these muscles get too tight or overworked, they pull on the ITB, creating tension that irritates the fat pad and bursa on the outside of your knee. That’s the inflammation and pain you feel.

So, the release work isn’t on the band itself. It’s on the sources of the tension: the TFL and the glutes. So instead of painful rolling, focus on gently releasing these key areas.

Strength is Your Greatest Weapon

Releasing tension provides temporary relief, but strength is what creates lasting change. The root of the problem often lies in a weak gluteus medius (a key hip stabilizer). When this muscle isn’t doing its job, the TFL jumps in to overcompensate. This overworked TFL then gets tight and cranks on the ITB.

Your mission is to build strong, resilient glutes. Start with simple exercises like side-lying leg raises with a straight leg (bent-knee exercises like clamshells can irritate the knee initially). As you get stronger, move into more functional movements like Bulgarian split squats. The rule: pain should never be above a 3 or 4 out of 10.

When to Run and When to Absolutely Not

This isn’t just about pain tolerance; it’s about tissue tolerance. If you have sharp, debilitating pain that alters your gait, you should not run. You’ll only reinforce the dysfunctional movement pattern that caused the problem in the first place.

Once the sharp pain has settled, you can begin a gradual return. But this is where most fail. They jump back to their old mileage too fast. A phased approach, building kilometers slowly while maintaining your strength work, is non-negotiable.

“Injections and pills can’t replace proper rehab; you can’t shortcut your way to strong, healthy knees.”

The Cortisone Trap

Cortisone is a sledgehammer for a job that needs a scalpel. It masks the problem. It doesn’t fix the weak glutes, the tight TFL, the wonky mechanics. It lets you run on a house with a crumbling foundation.

Unless you’ve truly exhausted every other option — strength, release, form, rest — and you’re under a specialist’s care, skip it.

The Finish Line

Fixing your IT band isn’t a quick fix. It’s a lesson in listening to your body and addressing the root cause. It teaches you that the obvious solution, i.e., attacking the pain, is often wrong. The real work is quieter, slower, and happens in the gym with focused strength work.

Small, daily corrections compound. Strengthen your glutes, release your TFL, build mileage slowly, and when the road bites back, listen. Sometimes the smartest move isn’t to push harder. It’s to pause, adjust, and then come back stronger.

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