A heel striker is a runner whose heel makes contact with the ground first during each stride. This is the most common running pattern by a wide margin: more than 85% of runners in standard running shoes land this way naturally. The technical term is “rearfoot strike,” and it produces a distinct force signature that sets it apart from midfoot and forefoot landing patterns.
How Heel Striking Works
When you run, your foot can land in one of three general ways: on the heel (rearfoot strike), on the middle of the foot (midfoot strike), or on the ball of the foot near the toes (forefoot strike). In a heel strike, the initial point of contact sits at or behind the center of the ankle joint. Your foot essentially reaches out in front of your body, touches down heel-first, then rolls forward through the arch and toes before pushing off.
This landing pattern creates a characteristic double-bump in ground force measurements. The first bump, called the impact peak, happens in the first milliseconds as the heel hits. The second, larger bump comes later as the body’s full weight passes over the foot. Forefoot and midfoot strikers don’t produce that early impact peak nearly as sharply, which is why heel striking gets so much attention in running injury discussions.
Why Most Runners Heel Strike
Heel striking isn’t a flaw or a bad habit for most people. It’s the pattern your body defaults to when you run in cushioned shoes at moderate speeds. Modern running shoes are built with elevated, padded heels that make rearfoot landing comfortable and natural. The cushioning absorbs much of the impact that would otherwise travel up through the ankle and shin.
There’s also a practical advantage: heel striking places less demand on the Achilles tendon and calf muscles compared to forefoot running. Research shows that switching to a forefoot strike in minimal shoes increases both the rate and magnitude of loading on the Achilles tendon. For runners without strong, conditioned calves, that extra tendon stress can become a problem quickly. Heel striking essentially lets the shoe do some of the shock absorption work that the calf-Achilles complex handles in forefoot runners.
The Impact Force Question
The main knock against heel striking is the loading rate, which is the speed at which force travels through your leg at initial contact. Heel strikers experience loading rates roughly 35% to 45% higher than habitual forefoot strikers. That sharp, fast jolt is what researchers call the “impact transient,” and it’s largely absent in forefoot running.
To put numbers on it: in one retraining study, heel strikers who switched to a forefoot pattern reduced their peak loading rate by about 50% within a week. The instantaneous loading rate dropped by around 42%. These are significant reductions, which is why gait retraining has become a popular intervention for runners dealing with repetitive stress injuries. However, it’s worth noting that both heel strikers and forefoot strikers experience impact forces. The difference is in timing and magnitude, not in whether impact exists at all. Forefoot runners still generate impact forces; those forces are simply smaller and arrive more gradually.
Injuries Linked to Heel Striking
Repetitive stress injuries like patellofemoral pain (often called “runner’s knee”), shin splints, and IT band syndrome occur roughly 2.5 times more often in rearfoot strikers compared to forefoot strikers. The connection to knee pain is especially well studied. Each time a heel striker lands, the leg is relatively straight with the foot out in front of the body. This positioning increases the stress on the kneecap joint, and over thousands of strides per run, that accumulated load can irritate the cartilage underneath the kneecap.
That said, forefoot strikers aren’t injury-proof. They tend to experience more calf strains, Achilles tendinopathy, and metatarsal stress fractures. The injury risk doesn’t disappear with a different foot strike; it shifts to different structures. This is one reason blanket advice to “stop heel striking” can backfire, particularly for runners who switch abruptly without gradually building calf and foot strength.
Cadence and Overstriding
Heel striking becomes more problematic when it’s paired with overstriding, which means landing with your foot far out in front of your center of mass. Overstriding amplifies the braking force at each step and tends to happen when cadence (steps per minute) drops below about 160. At low cadences, each stride is longer, and a longer stride almost guarantees a heavy heel-first landing.
There’s a natural inverse relationship between cadence and stride length. Runners who increase their step rate by even 5% to 10% often find that their foot lands closer to underneath their hips, which softens the heel strike without consciously changing foot placement. This is why many coaches and physical therapists recommend small cadence increases as a first step before attempting a full foot strike change. It’s a subtler adjustment with a lower risk of new injuries.
Should You Change Your Foot Strike?
If you’re running without pain, there’s no strong reason to overhaul your gait. The vast majority of recreational runners heel strike successfully for years. The pattern is efficient in cushioned shoes, and the body adapts its bones and soft tissues to the forces it regularly encounters.
Where gait retraining makes sense is for runners dealing with recurring knee or shin injuries that haven’t responded to other treatments. In those cases, transitioning to a forefoot or midfoot strike under guidance can meaningfully reduce the forces driving the injury. The key is doing it gradually. A sudden switch loads the Achilles tendon and calf muscles far more than they’re accustomed to, and runners who change overnight often trade a knee problem for a calf or foot problem. Most retraining programs spread the transition over several weeks, mixing the new pattern into short runs before applying it to longer distances.
A middle-ground approach that works for many runners is simply shortening the stride slightly and increasing cadence. This reduces the severity of the heel strike without requiring a complete change in landing mechanics. Even among elite distance runners, rearfoot striking is common, which suggests the pattern itself isn’t inherently harmful when the stride is well-positioned and the body is conditioned for it.