How to Prevent Blisters When Running | Stop Hot Spots Early

Prevent running blisters by reducing friction, keeping feet dry, and fixing shoe and sock fit before you head out.

Few things end a good run faster than a blister forming on mile two. The good news: blisters are predictable, and the steps to stop them are simple prevention habits, not complicated routines. The moment you feel a hot spot — that warm, sore, rubbing sensation — is the moment to act, not after the damage is done. Here’s how to keep your feet comfortable mile after mile.

Why Blisters Form And How Fit Prevents Them

Blisters are your skin’s response to repeated friction and moisture. When your foot slides inside your shoe, the rubbing damages the top layers of skin, and sweat makes the problem worse. The fix is to keep your foot stable and dry.

Shoe fit is the foundation. Your running shoes need enough room in the toe box so your toes aren’t jammed against the front, but not so much that your foot slides around with each stride. A snug heel with no slip is critical — if your heel lifts when you walk, your foot is moving, and friction follows.

Don’t run a long distance or race in brand-new shoes. Break them in gradually on shorter runs first so both you and the shoes adapt before the big miles.

Socks, Moisture, And Lubrication: The Daily Trio

Your socks are your first defense. Wear moisture-wicking or synthetic running socks and avoid cotton entirely — cotton holds sweat against your skin and dramatically increases friction. If your feet get wet during a run, change into dry socks as soon as you can. Wash and dry your feet thoroughly after every run, paying special attention between your toes.

Lubrication and barriers handle the high-friction zones. Apply anti-chafing balm, petroleum jelly, or a similar antifriction product to areas where you consistently rub — typically your heels, the ball of your foot, and between toes. For known problem spots, apply sports tape, moleskin, or gel bandages before you run to create a physical barrier between skin and shoe.

If you’re looking for a product specifically formulated for this job, our roundup of the best anti-blister balms on the market breaks down the options and how they hold up on long runs.

Fit, Foot Care, And Smart Training Habits

Lacing techniques matter more than most runners realize. Using a lacing method that locks your heel in place — like the runner’s loop or heel-lock lacing — prevents your foot from sliding forward and reduces the friction that causes blisters. It’s a five-second adjustment that pays off on every run.

Keep your toenails trimmed short. Long nails press against the front of your shoe with every stride and can cause both pain and blisters. And despite what you might have heard, don’t remove calluses. They’re your skin’s natural protection against friction and actually help prevent blisters.

Training load is a factor too. Increase your mileage gradually so your feet have time to condition themselves. A sudden jump in distance means your feet face more rubbing than they’re used to, and blisters are the result. The Runner’s World guide on blister prevention reinforces that gradual conditioning and early treatment are the core of staying blister-free.

What To Do When A Hot Spot Starts

A hot spot is your warning sign. At the first feeling of rubbing or burning, stop running and address it immediately. Apply a bandage, moleskin, or tape over the area to protect it from further friction. Treating the friction point in the moment is far better than treating the blister later.

Most mistakes happen before the run starts. Cotton socks, new shoes on race day, shoes with poor fit, ignoring wet feet, or pushing through a hot spot — each one is a preventable blunder. Skip these and your feet will thank you. Prevention isn’t complicated, but it does require a little consistency every time you lace up.