You are ten minutes into a ride and already reaching down to pull your shorts back into place. You tug them down, get back in rhythm, and five minutes later they have crept right back up.
By the end of the ride your inner thighs are raw and you spent more energy fighting your shorts than fighting the headwind.
The problem is usually not the shorts themselves. It is the leg grippers.
Those silicone-dotted bands at the bottom of each leg are the only thing holding the shorts in place against the constant upward force of pedaling.
When they wear out, the shorts ride up no matter how well they fit everywhere else.
Here is how to figure out which cause is yours and what to do about it.
TL;DR: Stop bike shorts from riding up by checking the leg grippers (silicone bands) for wear, switching to bib shorts with shoulder suspenders, sizing down rather than up, and ditching the underwear underneath. Wash cold, hang dry, and replace every 1 to 2 years.
Why Bike Shorts Ride Up
The fit is wrong
Bike shorts are designed to fit like a second skin.
If they are loose anywhere, the excess fabric gathers with each pedal stroke and works its way upward.
If they are too tight, the overstretched fabric keeps pulling toward the narrowest spot on your thigh.
The right fit is firm compression that holds the fabric flat against your skin without squeezing. You should be able to slide one finger under the hem but not bunch the fabric.
The leg grippers have worn out
Most cycling shorts have silicone-dotted bands at the bottom of each leg.
These grippers press against your skin and hold the hem in place.
After dozens of washes and hundreds of rides, the silicone dots flatten and the elastic loses tension.
Here is the test: stretch the bottom of each leg and let go.
If the hems slide freely instead of snapping back, the grippers are done.
According to Cycling Weekly’s gear maintenance guide, cycling shorts typically last 200 to 300 rides before the grippers and elastic give out.
The inseam is too short
Bike shorts with a 5-inch inseam leave the hem sitting right where your thighs are widest. Every pedal stroke pushes the fabric upward from that point.
A longer inseam moves the hem past the widest spot and onto the part of the thigh that tapers toward the knee, where there is less upward force. Most cycling-specific shorts have a 7- to 10-inch inseam for this reason.
You are wearing underwear underneath
Cycling shorts are designed to be worn against bare skin.
The chamois pad sits directly against your body and moves with you.
Adding underwear creates a second layer that shifts on its own, bunches up, and shoves the shorts out of position.
According to Bicycling magazine’s shorts guide, wearing underwear under cycling shorts is the most common fit mistake new cyclists make. The extra layer also traps moisture, which makes everything slide more.
The chamois is bunching
The chamois is the foam pad that cushions you against the saddle.
If it is too thick, too thin, or shaped wrong for your body, it folds and bunches while you ride.
That bunching pulls the surrounding fabric out of alignment and drags the shorts upward.
A chamois that fits correctly sits flush against your skin without shifting.
If you feel the pad folding or sliding during a ride, the chamois shape does not match your anatomy.
Different brands cut their chamois differently, so switching brands sometimes fixes persistent bunching even when the size is right.
Your saddle or bike fit is off
If you find yourself scooting forward or backward on the saddle constantly, the shorts are not the problem.
Your bike fit is.
Every time you adjust your position on the seat, you drag the shorts with you.
A saddle that is too high makes you rock your hips side to side.
One that tilts forward makes you slide toward the handlebars.
Both create the kind of constant movement that no pair of shorts can resist.
How to Stop Bike Shorts From Riding Up
Get the right compression fit
Best for: shorts that are new or you suspect are the wrong size.
Try bike shorts on in a cycling position, not just standing in a fitting room.
Lean forward, swing a leg over an imaginary top tube, and pedal in the air.
The shorts should feel like firm, even pressure on your thighs with no gaps, bunching, or pinching.
If you are between sizes, go with the smaller one.
Bike shorts are designed to compress, and a slightly snug fit will relax to the right tension after a few minutes of riding.
A loose fit only gets worse.
Give new shorts two or three rides before judging.
The fabric and elastic need a short break-in period to mold to your legs.
Shorts that feel slightly stiff on the first ride often settle into a perfect fit by the third.
Switch to a longer inseam
Best for: shorts that fit well everywhere except the hem keeps creeping up.
If your current shorts have a 5-inch inseam and keep riding up, try a pair with a 7- to 9-inch inseam. The extra length moves the hem to a narrower part of your thigh where there is less upward force from pedaling.
Longer-inseam cycling shorts (paid link) are available from most cycling brands. Those extra few inches of fabric make a bigger difference than any other single change.
Try bib shorts
Best for: riders who want to solve this problem permanently.
Bib shorts (paid link) have suspenders that go over your shoulders instead of a waistband.
The suspenders hold the shorts from above, the leg grippers hold them from below.
Nothing can ride up because the whole thing is anchored at both ends.
This is what most serious cyclists and professional riders wear.
Bib shorts also keep the chamois positioned correctly because the suspenders prevent the entire garment from shifting.
The trade-off is bathroom breaks take longer, but most riders consider that a fair deal.
Check and replace worn leg grippers
Best for: shorts that used to stay in place but have started riding up over time.
Stretch the bottom of each leg opening and look at the silicone dots on the inside.
If the dots are smooth, cracked, or missing, the grippers are finished.
No fix brings worn grippers back.
You can extend gripper life by washing shorts in cold water and hanging them to dry.
Heat from a dryer destroys silicone grip faster than anything else.
But once the grippers are gone, it is time for new shorts.
Stop wearing underwear underneath
Best for: new cyclists or anyone who has always worn underwear under cycling shorts.
Try one ride without underwear under your bike shorts. The chamois replaces underwear, and ditching that extra layer stops the fabric-on-fabric sliding that causes most of the bunching.
Many cyclists ride for years with underwear underneath before someone tells them. One ride without it and you will wonder why you ever wore it.
Use chamois cream
Best for: long rides where shorts start bunching after the first hour.
Chamois cream (paid link) is an anti-friction cream you apply to your skin or directly to the chamois pad before riding. It keeps the shorts from dragging and bunching during long rides.
Apply a thin layer to the contact area before putting on your shorts. The cream also prevents saddle sores, which is why it is standard equipment for anything over an hour.
Get a proper bike fit
Best for: riders whose shorts ride up no matter which pair they wear.
If your shorts ride up no matter what pair you wear, the problem may be your saddle position. A bike fit session at a local shop adjusts saddle height, tilt, and fore-aft position so you sit stable instead of constantly shifting.
The cost is typically $50 to $200.
It fixes more than shorts riding up.
Knee pain, back strain, and numbness all improve when the saddle is in the right spot.
How to Make Bike Shorts Last Longer
Cycling shorts take more abuse than regular clothing. Sweat, saddle compression, and hours of repetitive leg movement break them down faster than most people expect.
Wash after every ride. Sweat and bacteria eat through elastic and silicone grippers.
Rinse shorts in cold water as soon as you can after a ride, even if a full wash has to wait.
Never use a dryer. Heat permanently damages the elastic fibers and silicone dots that keep the shorts in place.
Hang them up every single time.
Rotate between pairs. The elastic needs a day off to recover its shape.
Two or three pairs in rotation will each last far longer than one pair worn back to back.
Once the leg grippers stop holding, the shorts will ride up no matter what else you do.
Most quality cycling shorts last 1 to 2 years of regular riding before that happens.
When they go, let them go.
If all your clothes ride up, not just bike shorts, the problem may be your body proportions rather than any single garment. See how to stop all clothes from riding up for fixes that cover every clothing type.
For related problems, see how to stop shorts from riding up and how to stop underwear from riding up.
Pin this page for the next time you are pulling your shorts down mid-ride.
12-year nomad, carry-on-only traveler across 5 continents, and creator of Organizing.TV.
I help you pack smaller, stress less, and actually enjoy the packing part of travel.