How Often Should You Replace Your Running Shoes? A Complete Mileage and Wear Guide

Most running shoes need replacing every 300 to 500 miles, but where your pair falls in that range depends on the shoe, your weight and where you run. To tell whether your current pair is done, check three things: mileage for its shoe type, the wear signs below, and a running log from now on.

Shoes wear out gradually. The midsole foam loses its bounce, the upper stretches, the outsole wears smooth, and the change is slow enough that many runners only notice when their knees or plantar fascia start complaining. Running on a dead pair is one of the easiest injury risks to avoid; MedlinePlus lists improper gear alongside poor training practices as a common cause of sports injuries.

Related: What to Wear for a Half Marathon: Race-Day Outfit by Weather, Chafing Fixes, and a Checklist; Best Moisture-Wicking Running Shirts for 2026: Tested in Heat, Cold, and Rain; Best Compression Socks for Running in 2026: Tested Over 500+ Miles.

How many miles running shoes last

The usual figure of 300 to 500 miles comes from shoe makers and sports medicine, and it is a fair place to start. Here is what it means in weeks at different training volumes:

The range is wide because shoes and runners differ. Light racing shoes with little midsole foam wear out near 300 miles; well-built daily trainers with dense foam often go to 500 or beyond. Heavier runners compress the foam harder with every stride, so it breaks down sooner.

What shortens or stretches that number

Your weight

This is the biggest factor the standard figures ignore. A 120-pound runner and a 200-pound runner put very different loads through the midsole. If you are heavier, plan on the 300-mile end; if you are light, you can often go toward 500.

Where you run

Concrete and asphalt wear outsoles faster and load the foam harder. On trails, rocks can cut or tear the lugs, and mud and grit grind the rubber down. Treadmills are the easiest on shoes because the belt is even and has a little give.

How you land

Heel strikers wear through the rubber at the heel sooner than midfoot or forefoot strikers. Overpronation or supination wears the shoe unevenly and can break down its support before the foam is finished. If one side of the outsole is far more worn than the other, a gait analysis may point you to a different kind of shoe.

The shoe itself

Expected life varies a lot by category:

Carbon-plated super shoes are a special case. The plate can outlast 300 miles, but the soft, bouncy foam around it breaks down fast. Many competitive runners feel their super shoes go flat after 150 to 200 miles, even while they still feel fine for easy runs.

Heat and damp

Heat speeds up the breakdown of EVA and other midsole foams, so a pair kept in a hot car or garage ages faster than one kept indoors. Shoes left wet can also lose glue strength and start to come apart.

Five signs your shoes are worn out

Mileage tells you when to start looking. The shoes tell you when they are done.

1. The midsole press test

Press your thumb hard into the midsole, the foam between the outsole and the insole. Fresh foam pushes back and springs back quickly. Worn foam squashes easily and recovers slowly, if at all. If you can, compare it with a new shoe of the same model. When it feels flat and dead, the cushioning is gone.

2. Creases in the midsole

Look at the midsole from the side. A new shoe has smooth walls. As the foam breaks down, horizontal creases appear, especially under the heel and the ball of the foot, where impact is highest. Deep, permanent creases mean the foam no longer rebounds.

3. Outsole wear

Turn the shoes over. Some wear is normal. Replace them if the rubber is worn through to the foam, if the tread has worn to smooth, shiny patches (grip on wet roads goes first), or if one side is far more worn than the other, which suggests the shoe's structure has deformed.

4. New aches

This is the sign most runners miss. If you develop shin splints, knee pain, plantar fascia irritation or hip soreness without changing your training, look at your shoes. The cushioning fades slowly enough that your body compensates, until it can't.

A simple check: if the aches ease when you run in a newer pair, the old pair is finished. Some runners keep a fresher pair in rotation for exactly this comparison.

5. They just feel different

Experienced runners can usually tell when a shoe is done. Landings feel harder, the shoe feels heavier on turnover, and it feels loose on the foot because the upper has stretched or the heel counter has softened. Trust that feeling; it usually comes before the injury.

Tracking your mileage

The easiest way is an app. Strava, Nike Run Club and Garmin Connect let you assign a shoe to each run and add up the miles for you.

Without an app, write the date you started a pair on a strip of tape inside the tongue and multiply your average weekly mileage by the number of weeks. It is rough, but it beats guessing.

Rotating two or three pairs

Midsole foam compresses under each run and takes time to spring back fully. Running in the same pair every day means you are always running on foam that hasn't fully recovered. Rotating pairs gives each one rest between runs, and when one pair starts to feel dead, you notice it straight away next to the others.

A three-shoe rotation also gives you the right tool for each run:

• a well-cushioned, durable daily trainer for easy runs and steady miles
• a lighter, more responsive shoe for intervals and tempo runs
• a max-cushion shoe for the weekend long run

It costs more up front, but each pair lasts longer, and varying the shoe varies the load on your feet and legs.

Retire shoes early if...

• They have a manufacturing defect: the sole separating, stitching failing, or materials breaking down early. Contact the maker; most offer warranty cover.
• They are damaged: a sharp rock through the midsole or a big tear in the upper.
• They no longer fit. Feet change size and shape with pregnancy, weight change and age.
• They have sat unworn for a year or more. Foam oxidizes and degrades with temperature swings even in the box, so don't assume an old unused pair is as good as new.

What to do with a retired pair

A pair with too little cushioning to run in often has plenty of life left for walking and errands, and every runner needs a pair for mowing the lawn and garage jobs. In good condition, donate them through Soles4Souls or One World Running, which pass shoes on to people who need them. Nike's Reuse-A-Shoe grinds old shoes into material for playgrounds and sports surfaces.

What you shouldn't do is keep running in them. Squeezing a few more miles out of a dead pair isn't worth the injury risk. When in doubt, replace too early rather than too late: a new pair costs far less than physical therapy.

A switch to five-toe footwear is a separate fit and activity decision, not a way to extend a worn running shoe's life. Our five-toe shoe beginner guide explains the format, while the FiveFingers fit guide covers toe pockets and sock bulk.

Frequently Asked Questions

How often should you replace running shoes?

Every 300 to 500 miles for most runners. At 20 miles a week that is roughly every four to six months, and at 40 miles a week every two to three months. Heavier runners and lightweight racing shoes sit at the 300-mile end, while durable max-cushion trainers such as the Hoka Bondi can reach 600.

How long do running shoes last in months?

That depends on your weekly mileage, not the calendar. At 10 miles a week a pair lasts about 7 to 12 months; at 30 miles a week, about 2.5 to 4 months. Shoes stored unworn for a year or more also degrade, because the foam oxidizes.

How long do carbon-plated super shoes last?

Many competitive runners feel the foam lose its pop after 150 to 200 miles, even while the shoe still feels fine for easy runs. The carbon plate can last well beyond 300 miles, but the soft foam around it breaks down quickly, which is why racing shoes such as the Nike Vaporfly are rated for 150 to 300 miles.

What are the signs that running shoes need replacing?

The midsole squashes easily and springs back slowly under a thumb press, deep creases form in the midsole walls, the outsole is worn smooth or through to the foam, new aches appear in the shins, knees or plantar fascia without a training change, and the shoe feels harder and heavier than it used to.

Can I still walk in running shoes that are worn out for running?

Yes. Shoes without enough cushioning for running often have plenty of life left for walking, errands and yard work. When a pair is truly done, donate it through Soles4Souls or One World Running, or recycle it through Nike's Reuse-A-Shoe, rather than sending it to landfill.