CoachingAnswer

WHAT ARE THE SIGNS YOUR BIKE DOESN'T FIT?

By Anthony WalshRoadman CyclingUpdated 9 July 2026

ANSWER

The eight most common signs your bike does not fit properly are: knee pain (front, back or lateral), numb or tingling hands, neck and shoulder tension, saddle discomfort or sores, hip rocking at the bottom of the pedal stroke, power that fades after 60-90 minutes despite fuelling, persistent lower back pain, and asymmetric cleat or shoe wear. If you have two or more of these, a professional bike fit is the fastest fix. Most amateur fit issues are caused by saddle height, cleat position, or reach — the three variables a fitter checks first.

KEY TAKEAWAYS

Knee pain, numb hands, and neck tension are the three most common fit complaints.
Power fade after 60-90 minutes is often a position problem, not a fitness problem.
Hip rocking at the bottom of the pedal stroke usually means the saddle is too high.
Most fit issues trace back to three variables: saddle height, cleat position, or reach.

WHO THIS IS FOR

IS THIS YOU?

The rider with recurring pain

You have pain that appears on every ride and want to know if your position is the cause.

The rider on a new bike

You bought a bike and it does not feel right but you are not sure what is wrong.

THE ROADMAN VIEW

Anthony has interviewed Phil Burt multiple times and the message is always the same: most amateur cyclists are riding a position that is costing them comfort, power, or both — and they have no idea because they assume aches and pains are just part of cycling. They are not. If something hurts every ride, your bike probably does not fit.

The tricky part is that fit problems are sneaky. Knee pain from a saddle 5 mm too high does not show up on a 30-minute ride. It appears at 60 minutes and gets worse. Numb hands from too much weight on the bars feel like gloves are the solution — they are not; the problem is your reach or bar drop. Power that fades in the last third of every ride gets blamed on fitness when it is often a position that the body cannot sustain.

The fix is almost always a professional bike fit, and the reason is that everything interacts. Moving the saddle to fix a knee often changes the reach, which changes the hand pressure, which changes the neck angle. A fitter adjusts the system; a home tweak adjusts one thing and creates two new problems. If you have persistent discomfort on the bike, stop guessing and get fitted.

EXPERT EVIDENCE

WHAT THE EXPERTS SAY

Phil BurtFormer Head of Physiotherapy, British Cycling
About 80% of bike-related pain in amateur cyclists is attributable to bike fit rather than training load. The three most common culprits are saddle height (too high or too low by 5-15 mm), cleat alignment (rotational or fore-aft), and excessive reach that loads the hands and neck.

PRACTICAL APPLICATION

DO THIS WEEK

Run through the eight-sign checklist
On your next long ride, note: any knee pain (where exactly?), hand numbness, neck or shoulder tension, saddle discomfort, hip rocking, power fade after an hour, lower back pain, or uneven cleat wear. Two or more is a strong signal your fit needs work.
Check saddle height first
Stand next to your bike — the saddle should be roughly at hip bone height. On the bike with your heel on the pedal at 6 o'clock, your leg should be almost fully extended. If your hips rock when pedalling, the saddle is too high.
Check reach second
Sit in your normal riding position on the hoods. Your elbows should have a slight bend, and you should not feel like you are stretching to reach the bars or hunching to stay close to them.
Book a professional fit if symptoms persist
A fit takes 1-3 hours and costs from around 150 to 350. It is the single highest-return investment for any cyclist with recurring position-related discomfort.

COMMON MISTAKES

WHAT CYCLISTS GET WRONG

MISTAKEAssuming pain is normal and just part of cycling.
FIXCycling should not hurt. Muscle fatigue is normal; joint pain, numbness and chronic discomfort are fit problems.
MISTAKEBuying accessories to fix fit problems.
FIXPadded shorts, gel gloves and cushioned bar tape mask symptoms without fixing the cause. Address the position first.
MISTAKEMaking multiple adjustments at the same time.
FIXChange one thing at a time and ride for a week. Multiple changes make it impossible to know what helped and what made things worse.

FAQ

FREQUENTLY ASKED QUESTIONS

How do I know if my bike is the right size?

If you can achieve a comfortable position with the stem, spacers and saddle adjustments available, the frame size is probably right. If you need an extremely long or short stem, or the saddle is at the limits of its rail travel, the frame may be the wrong size.

Can a bike fit fix knee pain?

In about 80% of cases, yes. Knee pain in cyclists is most commonly caused by saddle height, cleat alignment, or saddle fore-aft position. A professional fit addresses all three and usually resolves the pain within a few rides.

How often should I get a bike fit?

Once when you get a new bike, and again if your body changes significantly — after injury, weight change, or a drop in flexibility. A yearly recheck is sensible for serious riders.

Is numbness in hands during cycling normal?

Common, but not normal. It usually means too much weight is on your hands from excessive reach, too much bar drop, or insufficient core engagement. A fitter can redistribute the weight by adjusting reach and bar height.

Can I do my own bike fit at home?

You can do basic checks — saddle height, fore-aft, and reach — that get you in the ballpark. But a professional fit uses dynamic assessment, video analysis, and experience with common patterns that self-fitting cannot replicate.

Does bike fit matter more as you get older?

Yes. Flexibility decreases with age, which means positions that worked at 30 may cause pain at 45. Masters riders benefit more from fit adjustments because the margin between comfortable and painful narrows.