By Kara
Feeling chafing when running can quickly turn a good session into a painful one. Here is the immediate guide to what to do, how to ease the discomfort, and how to stop it happening again.
One minute you’re trying to be all healthy, getting your steps in, feeling dead pleased with yourself, and the next it feels like your thighs, sports bra, or underarms are trying to start a fight with you. It’s uncomfortable, distracting, and if you ignore it, it can go from “that’s a bit annoying” to “sweet Lord, why does my body hate me?” very quickly.
So if you’re out running and you start feeling that burn, rub, sting, or rawness, first things first — do not just power through like some sort of martyr. That is how you end up waddling home like you’ve been dragged through a hedge.
Slow down straight away.
Sometimes when you ease your pace a bit, you can work out exactly where the problem is. Is it your inner thighs? Under your arms? Around your sports bra band? Your waistband? Somewhere that’s got sweaty and started rubbing? Once you know where it is, you’ve got half a chance of sorting it before it gets worse.
Then stop and adjust whatever’s causing the issue if you can. Pull your shorts into place. Smooth your leggings out. Fix a twisted seam. Shift your bra band if it’s rubbing. Basically, have a little emergency wardrobe reset there and then. Sometimes that alone can make enough difference to get you home without feeling like your skin’s being sandpapered off.
If you’ve got a tissue, a bit of spare fabric, or anything soft, gently dab the area dry if sweat is making things worse. Because that’s usually the villain in all this — friction plus sweat. Lovely combination. Moisture makes the skin softer, then the rubbing starts, then suddenly your nice little run has turned into a torture session.
If it’s already properly sore, don’t be daft — stop the run and walk. I know, I know. It’s annoying. Especially if you were in a good rhythm. But there is absolutely no medal for turning a tiny bit of chafing into skin that feels raw for three days afterwards. Sometimes the smartest thing you can do is call it and get yourself home.
Once you’re back, get out of your sweaty gear straight away. Don’t sit around in damp leggings thinking it’ll be fine. It won’t. That’s just giving the irritation more time to kick off. Get changed, then wash the area gently with lukewarm water. No scrubbing, no messing about, no acting like you’re trying to clean the oven. Be gentle with it.
Then pat it dry. Pat, not rub. Important difference.
If the skin’s red and sore but not broken, a barrier cream or anti-chafe balm can help protect it while it settles down. If it’s already gone a bit raw, use something plain and soothing and leave it alone as much as possible. Loose clothes are your mate here. Now is not the time for tight knickers, clingy leggings, or anything else that’s going to keep rubbing and winding it up.
Now let’s talk about why it happens, because if you don’t sort the cause, it’ll just keep coming back like an ex who doesn’t get the hint.
Chafing usually comes down to friction and moisture. Skin rubbing against skin, fabric rubbing against skin, seams rubbing against skin — basically loads of repetitive movement in the presence of sweat. Which, sadly, is exactly what running involves. So if your shorts ride up, your leggings bunch, your bra band digs in, or your top starts rubbing under the arms, there’s your problem.
Your clothes matter more than people think. A lot more.
If your inner thighs are the issue, longer fitted shorts can make a massive difference. Not glamorous advice maybe, but effective. If your sports bra is rubbing, it might be the wrong size, the wrong fabric, or just not right for longer runs. If your waistband is irritating you, try something softer or higher-waisted that stays put better. If your top’s rubbing under the arms, the armhole cut might just not suit you for running.
And fabric? Massive deal. Cotton might feel nice when you first put it on, but once you start sweating, it can turn into a soggy nightmare. Proper sports fabrics that wick sweat away are usually much better because they help keep the skin drier. Less dampness, less rubbing, less rage.
You also want to look at seams. Big chunky seams in the wrong spot are basically little betrayal lines stitched into your outfit. Flat seams, seamless designs, and smoother fabrics are usually much kinder if you know you’re prone to chafing.
And honestly, this is where anti-chafe balm earns its keep. If you’ve had this problem before, don’t wait for it to happen again before doing something about it. Stick some balm on before your run anywhere you know gets irritated — inner thighs, bra line, underarms, whatever your usual trouble spots are. Prevention is far less dramatic than trying to fix angry skin afterwards.
Also, fair warning: heat, distance, and sweat levels all make it more likely. So if you’re running further than usual, it’s warmer outside, or you’re just having one of those extra-sweaty days, you’re more at risk. Which means it’s worth thinking ahead instead of assuming what worked for a short run in cool weather will magically hold up for a longer one.
And don’t let chafing knock your confidence, either. It’s not because you’re unfit. It’s not because your body’s “wrong.” It’s because running involves repetitive motion, sweat, and clothes, and sometimes those three things behave like absolute menaces together. It happens to loads of people.
So if you want the quick version, here it is.
If you feel chafing while running, slow down straight away. Adjust your clothes. Dry the area if you can. If it’s getting worse, stop and walk home. Once home, get out of sweaty gear, wash gently, pat dry, and use something soothing or protective. Then, before your next run, check what caused it — fit, fabric, seams, sweat, or skin rubbing.
That’s the real trick. Don’t just treat the pain. Fix the setup.
Because running’s hard enough without your own shorts trying to take you down, babe.
