◆ TRS
The Run
I've been running for years. Here's what I wish someone had told me.
Tap any topic to read.
Blisters come from rubbing. That's really all there is to it.
The question is what causes the rubbing in the first place, and almost every time it comes down to two things: your socks and your trainers. Get those two things right and the blister problem largely takes care of itself. Get them wrong and no amount of blister plasters will save you once you're deep into a long run.
◆ Your socks
If your sock holds moisture, it gets heavy and starts moving against your foot. That movement creates friction, and friction over enough kilometres turns into a blister. It's not complicated, it's just physics. A cotton sock is the worst offender. It soaks up sweat and sits heavy against your skin for the entire run, and the longer you go the worse it gets.
A proper running sock wicks that moisture away fast so your foot stays dry. Less moisture means less movement, less movement means less friction, and less friction means fewer blisters. That's the whole thing. If you want to understand more about what makes a running sock different, read our breakdown on running socks.
◆ Your trainers
Your feet swell when you run, more than most people realise. If your shoe is already snug when you're standing still, it's going to be too tight by kilometre five. That tightness causes pressure, pressure causes rubbing, and rubbing causes blisters. Going half a size up from what you'd normally wear is one of the simplest fixes and most runners never think about it.
It's also worth making sure your laces aren't pulled too tight. Same problem, different cause. Your foot needs room to move naturally as you run.
So before you reach for blister plasters and toe sleeves, check the basics. Are your socks actually wicking moisture away, or are they a cotton sock sitting heavy and holding every bit of sweat against your foot? Are your trainers giving your feet enough room? Fix those two things first and see how much changes.
◆ Control your breathing before you try to control your pace
This is the one most people skip straight past and it makes a bigger difference than almost anything else.
If your breathing is short and fast and panicked, your heart rate spikes and your body thinks it's working harder than it needs to. You get out of breath quicker, your legs feel heavier, and runs that should be manageable start feeling like a struggle from kilometre two onwards.
I've run every distance and I genuinely never get out of breath because I never stop thinking about my breathing. It sounds simple because it is. Start there before you worry about pace, distance, or anything else.
◆ Not every run should be hard
A lot of beginners think every run needs to feel like a workout. That if you're not pushing yourself, it doesn't count. That's not how running works and it's one of the main reasons people burn out or get injured early.
Your easy runs are where you actually build endurance. The slow, steady, conversational pace stuff. The kind of run where you could hold a full conversation without gasping. If you're doing three or four runs a week, one or two of them should feel almost too easy.
◆ What you put on your feet matters more than most people think
Most beginners spend a lot of time thinking about their route, their playlist, their pace. Very few spend enough time thinking about what's actually on their feet. The wrong trainers and the wrong socks cause more problems than most people realise, from blisters to joint pain to runs that feel twice as hard as they should. Get the right gear on your feet and a lot of other problems take care of themselves.
Most runners obsess over their shoes. Their GPS watch. Their nutrition. Their pace. Very few give their socks a second thought, and that's a mistake that shows up around kilometre eight when the rubbing starts.
◆ Your trainers
Running shoes are designed specifically for the repetitive forward motion of running. They absorb impact differently, they flex where your foot flexes, and they protect your joints over distance in a way that gym trainers or regular sneakers simply don't.
Go to a proper running shop, get your gait looked at if you can, and get the right shoe for your foot. It's worth every penny and it's one of the best investments you'll make as a runner.
◆ Your socks
A cotton sock holds moisture. When your foot sweats, and it will, a cotton sock soaks it up and sits heavy against your skin for the entire run. That weight and movement causes friction. Friction causes blisters. And blisters can end a run a lot sooner than your legs would have.
A proper running sock wicks that moisture away fast so your foot stays dry and comfortable regardless of how far you go. It's a small thing that makes a noticeable difference from the very first run you wear them on.
◆ The rest of your gear
Cotton is the enemy when you're running. It holds sweat against your body, gets heavy, and causes chafing in places you don't want to be dealing with mid-run. Lightweight, moisture wicking shorts and a breathable vest make a difference you'll feel within the first kilometre. You don't need to spend a fortune, but anything cotton that'll sit heavy and hold sweat against you as the run goes on is worth swapping out.
The biggest mistake most runners make on a long run is going out too fast. It feels fine for the first few kilometres. Then it doesn't.
Once your heart rate spikes early and fatigue sets in, you can't outrun it. There's no recovering mid-run. That feeling just compounds the further you go, and suddenly you've got a long way still to cover on legs that have already given up.
◆ Start slower than you think you need to
Your first kilometre or two is your warmup. Ease into it. Let the body wake up and find its rhythm before you push anything. Whatever your usual pace is, your first kilometre should feel noticeably slower than that. Something that almost feels too easy. That's not wasted effort, that's what keeps you feeling strong for the second half of the run rather than surviving it.
Build into your pace gradually. The best long runs feel like they get easier as they go, not harder. That only happens if you start easy enough to have something left.
◆ Fuel before you feel like you need to
This is one of the best pieces of advice I ever got from another runner. If you feel thirsty, it's already too late.
By the time your body is telling you it needs water or electrolytes, you're already behind. You won't catch up for the rest of the run. Your legs will feel it, your head will feel it, and the last few kilometres become a grind they didn't need to be.
Before you head out on anything over an hour, plan your route around where you can stop. A water fountain, a shop, somewhere you can grab a drink mid-run. An electrolyte drink alongside water makes a bigger difference than most people expect. Don't wait until you want it. Take it before you think you need it.