How often should you actually replace your sneakers? Foot experts share the answer

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Unboxing a new pair of sneakers is like opening a fresh journal. Will they take you to the finish line of your first 5K? Miles of trails with friends? Long strolls with your dog? They're a blank slate with so many opportunities. But just like a journal, there will come a day when you need to close the book on your shoes' story and start a new chapter.

Unfortunately, knowing when to shop for a new set of kicks isn't as obvious as filling up the last page of a journal. A scuffed-up pair of sneakers isn't necessarily ready to be retired, and if you wait until the tread is worn through, you've likely waited too long.

To get a better sense of when it's time for a new pair, I asked four foot experts to walk me through the signs, what causes sneakers to wear out faster and how to make a pair go the distance.

How often should you replace your sneakers?

That depends. "The classic 300-500-mile suggestion can be used to serve as a reminder to check in on the condition and comfort of your running shoes, but it's not a scientifically validated 'expiration date,'" says Troy Hurst , a physical therapist specializing in outpatient orthopedics and running performance.

He goes on to point out that shoe materials affect lifespan, with different midsole materials compressing differently over hundreds of miles of wear. "It's not really possible or accurate to assign a single overarching rule for when every shoe needs to be replaced," he says. Still, logging your miles can be a helpful reminder to check in on your shoes, and the right app makes it easy. Garmin Connect and Strava both have gear tracking features that let you add your shoes and see how many miles you've racked up in each pair. Garmin Connect works with Garmin watches, while Strava syncs with most major fitness watches. Strava also lets you set a mileage reminder for each pair.

One sign your shoes are likely well past their replacement date is significant wear to the durable rubber tread. "Using shoes without a tread pattern is similar to the dangers of driving with tires with missing tread patterns," says Samantha Landau , podiatrist and professor at Touro University's New York College of Podiatric Medicine. "The risk of slipping and losing balance greatly increases."

The sole feels flat or doesn't spring back

Remember that nice, springy cushioning you felt the first time you slid on your sneaks? If that bounciness is no longer there, it may be time for a new pair. "If the sole feels hard or flat when pressed and doesn't spring back, that can be another sign," says Dr. Daniel Cuttica , a board-certified orthopaedic foot and ankle surgeon at The Centers for Advanced Orthopaedics.

That's because midsole foams "only have so much life in them," says Landau. She explains that foams are designed to rebound, but at the microscopic level, the foam cells can only compress and spring back so many times before they start to break down.

They wobble on a flat surface or have a caved-in spot

If your feet roll inward or outward more than usual, your shoes may wear unevenly. A good rule of thumb is to set them on a flat surface and look for whether they're a bit off-kilter. Cuttica says they may "sit unevenly on a flat surface," while Hurst suggests looking for any "permanently collapsed" areas.

The upper no longer holds your foot in place

This matters most in sport-specific sneakers designed to lock your foot in. "A torn upper that allows the foot to slide sideways may be especially problematic during sports like tennis or basketball, even if the midsole still feels comfortable," says Hurst.

Just asking yourself if your shoes still feel comfortable may be one of the best ways to know if it's time to replace them. "The very best guideline for when to replace running or daily shoes … is when they no longer provide the comfort, fit, traction and/or function that your body needs," says Hurst.

There's evidence to back this up. A 2025 study published in the European Journal of Sport Science asked participants to rate the perceived comfort and cushioning of specific running shoes. At the end of the six-month trial, those who had rated their shoes highest for comfort and cushioning were the least likely to have experienced injuries over the trial period.

They're old, even if you barely wear them.

That pair of sneaks you lost in the back of your closet may not be as fresh as they look. "Shoes can also deteriorate without heavy use," says Cuttica. "Some materials dry out and become stiffer over time." While there's no hard-and-fast rule, Cuttica suggests replacing sneakers annually, even if they haven't racked up the miles.

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There's a range of factors that contribute to a shoe's deterioration.

Type of foam. "Lighter, higher-performance foams tend to degrade and wear out faster," says Cuttica. And a 2024 study backs him up, finding that among five commercial midsole foams, the lightest and highest-cushioned also broke down the fastest. Conversely, the densest foam lasted the longest.

Body size. "Heavier runners and athletes compress the shoe more with each step, bringing it closer to its deformation limit or causing it to 'bottom out,'" explains Cuttica. But someone who's 6'5" and 250 pounds doesn't necessarily have to replace their shoes twice as often as their 5'6", 150-pound friend. "Greater mass means the shoe must support greater force, but that does not establish a particular replacement schedule for a heavier person," says Hurst.

Foot structure or gait. "If the foot is very flat, the inner portion of the shoe will collapse, and if they have a very high arch, the outer portion of the shoe will wear out faster," says Bob Baravarian , podiatrist and director of foot and ankle services at DOCS Health in Los Angeles.

Higher-intensity activity. "Higher-intensity, higher-impact activities fatigue a shoe faster than walking the same distance," says Cuttica.

External environment. Rough terrain or extreme temperatures can cause more wear than walking on an indoor track. "Abrasive ground, repeated dragging and high heat conditions can wear the outsole faster," says Hurst.

If you have flat feet, Baravarian says an insole may help limit that inward roll and the wear it causes on the inside of your shoes. Just keep Hurst's caveat in mind: New insoles won't "rebuild a collapsed midsole or restore worn-out sole traction." They're a good option for getting the most out of new shoes, not for substantially extending the life of shoes that are already worn down.

While everyone should stay attuned to their feet and make sure they're wearing sufficiently supportive sneakers, but Cuttica says some groups should be especially vigilant: "Older adults, people with higher body mass, runners or athletes with high cumulative mileage and people with foot conditions such as plantar fasciitis, arch abnormalities, diabetic neuropathy or knee osteoarthritis should monitor their shoes more closely."

In fact, according to a 2024 review study , roughly 48% of older adults' shoes had partly to heavily worn soles, a factor that could result in slips and falls. Likewise, international diabetic-foot guidelines tell at-risk patients to "visually inspect and manually feel inside all shoes before you put them on," to help reduce the risk of blisters, sores or other injuries that could go unnoticed due to loss of sensation.

While no shoe will last forever, there are ways to maximize the time you get out of your most recent purchase.

"Rotating between more than one pair is the best single strategy," says Cuttica. This allows the foam to recover somewhat between uses. In fact, one small, lab-based study found that running shoes given a 22-hour rest between bouts of machine testing temporarily regained some of their shock absorption, although by the end of testing, they had worn down just as much as shoes that didn't get a break. This means that you may be able to use your shoes more comfortably for longer, but you won't necessarily get many more miles out of them.

All those delicate shoe materials, including glues and high-tech foams, can be damaged when exposed to sweat, water, and the elements. "Moisture and humidity can accelerate breakdown," confirms Cuttica. It's important to allow your shoes to dry between uses, but you have to do it wisely. "Avoid drying them on a radiator or in a hot clothes dryer," says Hurst. "Heat can distort shoes or damage adhesives."

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"Basic care is the most realistic thing you can do to extend the life of footwear," says Hurst. But instead of throwing your kicks in the washing machine, clean them carefully. "Follow the manufacturer's cleaning instructions, remove excessive dirt and debris," he adds.

Fix small problems early, if the fix fits the problem

"Worn laces or a damaged removable sockliner may be replaceable if the rest of the shoe remains functional," says Hurst. But he also warns, "The repair needs to match the actual problem." Throwing in a new insole or adding a heel patch won't help if the midsole foam is toast.

Protect your feet while a pair wears down

Minor wear can affect comfort. An upgraded sock, new laces or slathering on a friction-reducing balm before heading outside can keep your feet happy without requiring a new pair of shoes.

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While buying a new pair of shoes can seem like an expensive undertaking, Cuttica points out that "it may help prevent injuries and keep you active over the long term." So go ahead and keep an honest eye on your sneakers. "Periodically check the tread, inside lining, fit and any developing deformation, and pay attention when the shoe starts functioning differently or just doesn't feel right anymore," says Hurst. A timely replacement can save you pain and discomfort down the road.

Daniel Cuttica , DO, board-certified orthopaedic foot and ankle surgeon at The Centers for Advanced Orthopaedics

Troy Hurst , PT, DPT, physical therapist specializing in outpatient orthopedics and running performance

Samantha Landau , DPM, MPH, professor at Touro University's New York College of Podiatric Medicine

Bob Baravarian , DPM, director of foot and ankle services at DOCS Health in Los Angeles

Our health content is for informational purposes only and is not intended as professional medical advice. Consult a medical professional on questions about your health.