How to Stop Chafing When Running: the 5 Best Anti-Chafe Products for Running and Trail 2026

Chafing doesn’t show up at mile 3. It shows up at mile 20, when sweat has dried into salt, your kit is soaked and every stride repeats the same rub thousands of times. On an ultra it can force you to walk, or drop, even when your legs feel fine. The good news: it’s almost always preventable with two things — a barrier on the skin and seam-free clothing in the critical zones.

What Brands Make Anti-Chafe Running Apparel?

“Anti-chafe technology” in running apparel mostly means seamless (circular-knit) construction, flatlock seams where seams can’t be avoided, and fabrics that don’t hold water. You’ll find it in compression shorts and tights, seamless sports bras and toe socks. In this guide we pick one proven option per problem zone rather than a brand-by-brand catalogue; for a deeper look at seamless women’s clothing, read our guide to seamless technology in women’s trail clothing.

What to Use for Each Zone

Zone	Usual cause	Main fix	Backup
Inner thighs and groin	Skin on skin, or shorts riding up	Compression shorts	Anti-chafe balm
Chest and under the bust	Seams on the bra band	Seamless sports bra	Balm on the band
Nipples	Wet shirt rubbing	Balm or adhesive guards	Snug technical shirt
Armpits and arms	Arm against torso, pack straps	Anti-chafe balm	Adjust your pack properly
Toes	Toe on toe	Toe socks	Short toenails
Heel and instep	Shoe or sock moving	A well-fitting sock	Hydrocolloid plaster as soon as you feel heat

The 5 Products, One by One

1. BodyGlide Original — Best Anti-Chafe Balm

The standard among distance runners. It’s a stick you apply like deodorant, even with sweaty hands, and it leaves a barrier that doesn’t stain your kit. Use it on the groin, armpits, nipples, under the bra band and wherever your pack straps sit. For races over 4-5 hours, carry a small stick and reapply at an aid station.

Versus petroleum jelly: it works, but it’s greasy, stains and traps sand and dust. A stick balm is cleaner and easier to reapply mid-race.

2. HANKER High-Waist Compression Shorts — Best for Thigh Chafing

If your thighs rub, no balm lasts a full ultra on its own: the real fix is keeping skin off skin. A high-waist compression short, worn under your running shorts or on its own, stays put and doesn’t ride up with your stride. The wide waistband is designed not to dig in under a belt or waist pack.

3. HANKER Seamless Sports Bra — Best Seamless Sports Bra

Chafing under the bust almost always comes from the seams on the band. A high-support seamless bra removes those seams where the fabric meets your skin. For more on fit and sizing, see our plus-size women’s trail running clothing guide.

4. OrrinSports Toe Socks — Best for Toe Rubbing

Toe socks separate each toe and stop toe-on-toe rubbing, the main cause of blisters between the toes. They take a moment to put on, but on long descents with swollen feet the difference is huge. More options in our best trail running socks comparison.

5. Compeed Medium Blister Plasters — Best Once Chafing Has Started

Always carry them in your vest. The moment you feel heat on a spot on your foot, stop and apply one: it’s the difference between a niggle and an open blister halfway through the race.

Anti-Chafe Routine for an Ultra

1. The day before: nothing new. Clothes, bra, socks and pack all tested on at least one long run.
2. Before the start: balm on the groin, armpits, nipples, under the bra band and wherever your pack rests.
3. During the race: reapply every 4-5 hours or after getting wet (rain, river crossings, pouring water over yourself).
4. In your drop bag: spare socks and shorts. Changing mid-race prevents more chafing than any product.
5. At the first warning: stop for a minute and protect the spot. Waiting for the next aid station usually costs more.

FAQ

Is petroleum jelly or anti-chafe balm better for running?

Both create a barrier, but a stick balm doesn’t stain, doesn’t trap sand and is easy to reapply with sweaty hands. On long races it’s worth the price difference.

How do I stop my thighs chafing when running?

Wear compression shorts or short tights that cover the contact area and don’t ride up. Balm helps, but on long races sweat washes it away.

What clothing prevents chafing?

Clothing with no seams in the contact zones (bra band, underarm, groin), a fit that doesn’t shift as you move, and technical fabric that doesn’t hold water. Cotton is the worst: it gets heavy when wet and rubs.

What should I do if I start chafing during a race?

Clean the area if you can, put balm over it so it stops rubbing, and cover it with a plaster. On the foot, use a hydrocolloid plaster like Compeed.