Heel spurs are bony calcium deposits that build up on the underside of your heel bone over months and years of repetitive stress. Preventing them comes down to reducing the mechanical forces on your heel through better footwear, targeted stretching, weight management, and smarter choices about the surfaces you walk or run on. Since most heel spurs develop silently and only show up on an X-ray after pain starts, prevention is far easier than treatment.
How Heel Spurs Actually Form
Your heel bone constantly adapts to the forces placed on it. When those forces are repetitive and excessive, the bone responds by growing extra calcium deposits, following the same biological principle that governs all bone remodeling: bone builds where stress demands it. A single hard impact won’t trigger a spur, but low-level repetitive trauma over time causes microscopic damage that eventually leads to abnormal bone growth. As the impact force increases, fewer repetitions are needed to start the process.
There’s also a genetic component. Some people are “bone-formers,” meaning their bodies are predisposed to lay down new bone in response to mechanical stress. This explains why two people with the same activity level and body weight can have very different outcomes. You can’t change your genetics, but you can control the forces reaching your heel.
Heel spurs and plantar fasciitis are closely linked but not identical. In a study of people with plantar heel pain, 30% had both a heel spur and thickened plantar fascia, while only about 4% had a spur without fascial thickening. This means the strategies that prevent plantar fasciitis, keeping the plantar fascia flexible and reducing tension at its attachment point, also protect against spur formation.
Manage Your Weight
Obesity is one of the strongest risk factors. In research on military recruits, 45% of those with obesity had calcaneal spurs, compared to just 9% of those who weren’t obese. Every pound you carry multiplies the ground-reaction forces hitting your heel with each step, and those forces accumulate across thousands of steps per day.
Weight loss produces measurable changes in foot pressure. A pilot study found that people who lost more than 10% of their body weight (roughly a 4.6-point drop in BMI) had significantly lower peak pressure under the medial heel compared to those who lost less than 5%. Even modest weight loss shifts the equation in the right direction, reducing the repetitive microtrauma that drives spur formation.
Choose the Right Footwear
Shoes are your first line of defense because they’re the barrier between your heel and the ground. Look for three features: adequate arch support, cushioning under the heel, and a proper fit that doesn’t allow your foot to slide or collapse inward. Flat shoes, worn-out sneakers, and unsupportive sandals all allow more force to transfer directly to your heel bone.
If you spend long hours standing for work, this matters even more. Occupations that keep you on your feet are consistently associated with higher rates of calcaneal spurs. Replacing your shoes before the cushioning breaks down (typically every 300 to 500 miles for running shoes, or every 6 to 12 months for daily wear shoes) keeps protection consistent. Over-the-counter arch support insoles can extend the life of otherwise supportive shoes and add an extra layer of shock absorption.
Stretch Your Calves and Plantar Fascia Daily
Tight calf muscles and a stiff plantar fascia increase the pulling and compressive forces at the heel. A regular stretching routine counteracts this. Two stretches are particularly effective:
Standing calf stretch: Place your hands on a wall with one foot behind the other, toes pointing straight ahead. Keep the back knee straight and the heel flat on the ground while bending the front knee forward until you feel a stretch in your back calf. Hold for 45 seconds, repeat two to three times, and aim for four to six sessions throughout the day.
Seated plantar fascia stretch: Cross your affected foot over the opposite knee. Grab your toes and pull them back toward your shin, stretching the arch and calf simultaneously. With your other hand, massage deeply along the arch. Hold for 10 seconds and continue for two to three minutes. Repeat two to four times daily.
A frozen water bottle or tennis ball rolled under the arch for three to five minutes, twice a day, combines stretching with mild inflammation relief. If you experience morning heel stiffness, doing a towel stretch before you get out of bed (loop a towel around the ball of your foot and gently pull toward you) can reduce that first-step pain that signals excessive plantar fascia tension.
Pay Attention to Your Walking and Running Surfaces
The surface under your feet matters more than most people realize. A study of 347 competitive long-distance male runners found that running more than 25% of training miles on tartan (the rubberized track surface) was associated with nearly three times the odds of developing plantar heel pain, even after adjusting for other training factors. Hard, unyielding surfaces like concrete and asphalt transmit more force to the heel than grass, dirt trails, or well-cushioned treadmills.
If you run or walk for exercise, varying your surfaces spreads the mechanical load more evenly and reduces the repetitive, identical impacts that trigger spur formation. When hard surfaces are unavoidable, compensate with more cushioned footwear and more frequent stretching.
Watch for Gait Problems
How your foot strikes the ground with each step shapes where stress concentrates on the heel. Overpronation, where the foot rolls excessively inward, is the most commonly cited gait issue, though research shows the relationship is complex. People with plantar heel pain tend to have increased mobility in the rearfoot and medial forefoot, suggesting instability plays a role.
If you notice uneven wear patterns on the soles of your shoes, particularly heavy wear on the inner heel or outer edge, that’s a practical sign your gait may be directing extra force to vulnerable areas. Motion-control shoes or custom orthotics can correct these patterns. As you age, gait naturally changes, and this shift is one reason heel spurs become more common in older adults.
Recognize Early Warning Signs
Most people don’t know they have a heel spur until pain forces them to get an X-ray. The spur itself often isn’t painful, but the soft tissue irritation surrounding it is. The classic early signal is an intense stabbing pain in the heel that’s worst with your first steps in the morning or after sitting for a while. The pain typically eases once you’ve walked for a few minutes, then returns after the next period of rest.
If you start noticing this pattern, it’s a sign that the plantar fascia is under strain and the conditions for spur development are present, even if a spur hasn’t formed yet. This is the ideal window to ramp up stretching, reassess your footwear, and address any weight or activity changes that may have shifted the load on your heels. Catching it at this stage can prevent a temporary irritation from becoming a permanent bony growth.