How to Prevent Blisters When Running

Seated person putting on running sneakers over blue running socks

Blisters. Just hearing the word can make any runner wince. These little terrors can turn an otherwise blissful run into a painful ordeal.

But fear not. With the right care, and the right gear — specifically, Merino Wool socks for running — you can keep those pesky blisters at bay. We’re here to show you how Merino Wool socks can be a blister-busting game-changer––plus give you a few more tips, to boot.

The Blister Problem

Blisters are the unfortunate result of friction, heat, pressure, and moisture combining forces against your feet. When your skin rubs against your shoes or socks, it creates friction. Add some sweat into the mix, and you've got a recipe for disaster: painful blisters that can derail your run and your positive attitude.

So, what leads to blisters? First up, wearing shoes that don't fit right or haven't been broken in yet. Next, the wrong socks.

Feet running down street wearing black running socks with rainbow stripes

Cotton socks trap moisture, making your skin more prone to blistering. And let's not forget dirty, sweaty feet—blisters love them! Rocks in your shoes or spoonfuls of sand between your toes don’t help either.

Avoid these pitfalls by ensuring your running shoes have a fit Goldilocks would love (not too tight, not too loose), opting for moisture-wicking Merino Wool socks, and keeping your feet clean and dry. Change your socks regularly, keep those feet fresh, and tend to any hotspots right away.

Your runs will be smoother, and your feet will thank you!

The Merino Wool Solution

Enter Merino Wool socks. These aren't just any socks – they're your foot BFFs, and the best running socks to prevent blisters. Here's how they get the job done:

Moisture Management: Merino Wool is like your personal foot concierge, whisking moisture away from your skin faster than you can say "sweaty feet." Its natural wicking properties keep your feet dry, making blisters nothing but a distant nightmare.

Temperature Regulation: Whether it's a scorching summer run or a frigid winter jog, Merino Wool has your back. It keeps your feet cool when it's hot and warm when it's not, maintaining the perfect temperature and preventing the conditions that lead to blisters.

View of feet from above wearing orange no show run socks

Soft, Smooth Operator: Forget the itchy, scratchy reputation of regular wool. Merino Wool is as soft as a cloud and as smooth as your best dance moves. Its fine fibers glide against your skin, reducing friction and keeping blisters at bay.

Natural Odor Resistance: While not directly related to blisters, Merino Wool's natural odor resistance means your socks stay fresh run after run. No more holding your nose while peeling off your socks!

More Tips for Preventing Blisters

Even with the magic of Merino Wool in your corner, there are extra steps you can take to ensure blister-free runs:

Ensure Proper Shoe Fit

Close up of feet in running sneakers that fit right

Ill-fitting shoes are a common cause of blisters. Make sure your running shoes fit well and are a good match for your foot type and running style.

Your feet can swell during a run, especially in warm weather, so ensure there's enough room in your shoes to accommodate this without causing your feet to slide around.

Don't take brand-new shoes on a long run. Break them in gradually with shorter runs to avoid blisters by letting your feet and shoes get to know each other.

Specialty running stores can analyze your gait and provide professional recommendations for the best fit.

Choose the Right Socks for Running

Feet on stairs wearing micro crew running in socks in pink and orange

Picking the right performance running socks is a biggie for blister prevention! Merino Wool socks are a great start, but also consider the run sock's height and fit.

  • The taller reach of Micro Crew socks, for example, can protect against debris that might sneak into your shoes during trail runs, causing blisters.
  • Are you a fan of wider toe boxes in your running shoes? Less cushion might be right for you.
  • Want to prevent ankle slippage & blisters on the backend? Maybe go with a little more cushion.

Look for socks that offer a snug, performance fit without being too tight, and avoid cotton socks which trap moisture.

Keep Your Feet Dry

Sweat and external moisture are the enemies of blister-free feet, which is why runners should always opt for moisture wicking socks. If you're on a long run or participating in an ultramarathon, consider changing your socks periodically. Fresh, dry socks can make a world of difference.

If you often run in wet conditions, consider if waterproof running shoes are the right choice for you, to keep your feet dry from the outside in.

Take Care of Your Feet

A runner doing some warm up stretching

Healthy feet are less prone to blisters, so give them the TLC they deserve. Keep your toenails trimmed to avoid pressure and friction inside your shoes.

Moisturize your feet daily to stave off dryness and cracks. If you feel a hotspot developing during your run, stop and address it –– remove debris, adjust your socks, or add a blister pad to prevent it from worsening.

Slick Moves and Powder Power

If you’ve got the right shoes and socks, you’re 90% of the way to preventing blisters.

If you find you need an extra layer of protection, some people swear by a thin layer of petroleum jelly or anti-chafing balm on your heels and toes to reduce friction. Foot powders and antiperspirants may also help keep feet dry by absorbing sweat — we haven’t done a study on these methods, but we also have been known to pull out the Bag Balm before an especially long race on a rainy day.

Pressing on with a Blister

If you develop a blister during a long run or race, like a marathon, and need to press on, there are a few tricks to minimize the damage (and discomfort).

First, if possible, stop and apply a blister pad or bandage to cushion the area. Keep the area as dry as possible.

After the race, clean the blister with antiseptic, and cover it with a sterile bandage to prevent infection. Let it air out when you're not wearing shoes, and avoid popping it to reduce the risk of infection.

The Darn Tough Difference

At Darn Tough, we take Merino Wool and elevate it to an art form. Our socks are crafted for ultimate comfort –– including blister prevention.

True Seamless Construction: Say goodbye to annoying seams that rub your feet the wrong way. Our seamless construction eliminates friction points, reducing the chances of blisters. The smooth, undetectable seams ensure your feet are protected no matter how long you run.

Performance Fit: Our socks hug your feet like they’re long-lost friends. No more bunching up or slipping down — they stay put! They conform to your unique foot shape, not some generic “average” foot. Plus, with targeted arch support, our socks move with you, not against you, giving you a secure, comfy fit every step of the way.

Durability and Lifetime Guarantee: And if you ever manage to wear our socks out, we'll replace them. For life. Seriously. As part of the Darn Tough fam, you’ll always have a reliable pair of socks, reducing the risk of blisters caused by worn-out or damaged socks.

A bunch of feet running up stairs in brightly colored merino wool socks for running

So pull on your favorite pair of Darn Tough socks, lace up, and hit the road, track, or trails with confidence. By following these tips and trusting in the magic of Merino Wool, you'll be well on your way to blister-free running bliss. Happy running!


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