For anyone who spends a lot of time on their feet – marathoners, ultrarunners, hikers, walkers and even golfers – blisters can feel inevitable. But with the right footwear system, including moisture-wicking and blister-preventing socks, many common causes of blisters can be reduced or prevented altogether.
What Causes Blisters While Running or Hiking?
Blisters while running or hiking are usually caused by a combination of friction, heat and moisture. Some of the most common causes of blisters include:
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Moisture and sweat: A wet foot from sweat, rain or river crossings can increase the risk of blisters.
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Warm temperatures: In hot or humid conditions, feet tend to sweat more, creating excess moisture and increasing friction inside your shoes.
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Improper shoe fit: Shoes that are too loose will allow feet to slide around, creating extra movement and rubbing. Shoes that are too tight will create pressure points and hotspots. It’s always a good idea to get properly fitted at a local running or outdoor store!
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Mud, sand, rocks: When terrain like sand, mud or little rocks get into your shoes, they can increase the friction which leads to blisters.
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Long distances or elevation changes: Extended time on your feet, especially during steeper climbs or big descents, can increase pressure and friction on certain areas of the foot.
While there are many factors that contribute to blisters (as mentioned in the section above!), one of the biggest culprits is skin-on-skin friction, which is where toesocks can help.
Why Do Blisters Form Between Toes?
When comparing toesocks to traditional socks, the biggest difference is how toesocks eliminate friction between the toes.
Traditional socks allow toes to rub directly against one another movement. Over time, this friction can create hotspots, irritation and eventually blisters.
Toesocks, however, wrap toes individually, entirely eliminating skin-on-skin friction. Many endurance athletes find that toesocks help prevent blisters during ultramarathons and long hikes where repetitive movement is often unavoidable, like the Cocodona 250. Professional ultrarunners like Courtney Dauwalter swear by toesocks.
Another benefit of toesocks is moisture management. Injinji toesocks are made with moisture-wicking materials that help wick sweat away from the skin. Dry feet = less friction = fewer blisters!
If you’ve ever thought, “Are toesocks are better than regular socks for running?” the short answer is yes. To better understand the role toesocks play in foot health, check out why these Team Injinji Athletes and Physical Therapists recommend toesocks.
How to Prevent Blisters While Running or Hiking
Whether you’re heading out for a quick trail run, a multi-day hike or an ultramarathon, a few simple adjustments to your footwear system can make a huge difference.
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Wear Injinji toesocks!
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Choose moisture-wicking fabrics like polyester instead of cotton
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Apply anti-chafe balm or lubricants to hotspot areas
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Change into dry socks after rain or river crossings
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Trim toenails regularly to reduce pressure inside shoes
Frequently Asked Questions About Blisters
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How long does it take for a running blister to heal?
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Most blisters heal within a few days to about two weeks, depending on blister size.
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- Does Vaseline help prevent blisters?
- Yes, lubricants like Vaseline can reduce friction and help prevent hotspots from forming.
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Is it okay to keep running or hiking with a blister?
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If the blister is small, cover it with a hydrocolloid bandage or athletic tape. If it is large, carefully drain the blister by piercing it with a sterilized needle. Apply an antibacterial ointment and cover it securely with a blister-specific bandage.
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Should I pop a blister or leave it alone?
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In most cases, it is best to leave the blister alone and let it heal naturally.
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Do blisters mean my running shoes don’t fit properly?
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Not necessarily, but it can be a strong sign that something about your footwear system isn’t working well!
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Interested in Injinji socks that prevent blisters, but not sure which to choose? Take a look Team Injinji Athletes’ favorites!
