CoachingAnswer

WHAT ARE THE SIGNS I NEED A BIKE FIT?

By Anthony WalshRoadman CyclingUpdated 26 May 2026

ANSWER

The clearest signs you need a bike fit are recurring knee pain, numb hands or feet, lower back ache after 60–90 minutes, saddle sores that don't respond to chamois cream, and neck stiffness on longer rides. These aren't normal cycling discomfort — they are your body flagging a position problem. Most amateur cyclists are riding a bike set up by a shop assistant, not a fitter. Almost all of these issues are fixable.

KEY TAKEAWAYS

Recurring pain in the knees, back, hands, feet or neck is a position signal, not a badge of suffering.
Saddle sores that keep returning despite good shorts and cream usually mean saddle height or tilt is off.
Numbness in hands or feet within the first hour suggests pressure points from reach or cleat position.
A fit matters most when symptoms appear, but also before they do — position shapes injury risk over thousands of hours.

WHO THIS IS FOR

IS THIS YOU?

The rider dealing with recurring pain

You're soldiering through knee or back pain on every ride and assuming it's just part of the sport.

The rider upgrading their bike

You've just bought a new frame or moved between disciplines and want to transfer your position correctly.

THE ROADMAN VIEW

Anthony sat with Phil Burt — the man who fitted Bradley Wiggins, Chris Froome and Victoria Pendleton at Team Sky and British Cycling — and the message was clear: most amateur cyclists are riding in a position that was never designed for their body. The shop set the saddle at a rough height, handed them the bike, and that was that. Thousands of hours later, the knees, the back and the neck all start complaining.

The frustrating part is that most of these signals are fixable with small changes. Saddle 5mm too high causes knee pain behind the cap. Too much reach causes pressure on the hands and rounds the lower back. Neither requires a new bike — they require someone who knows what they're looking at.

The honest answer is: don't wait until something hurts badly. A proper fit before a big event block or a new bike purchase is an investment in thousands of pain-free hours. And if something is already hurting, that's not normal — it's solvable.

EXPERT EVIDENCE

WHAT THE EXPERTS SAY

Phil BurtFormer Team Sky and British Cycling physiotherapist and bike fitter
Pain while cycling is almost always a position problem. The five most common complaints — knee pain, lower back, neck, numb hands, saddle sores — all have identifiable fit causes that can be addressed systematically without expensive equipment.
Hear it: I Tried A Bike Fit From Team GB Bike Fitter (Here's What Happened)
Daryl FitzgeraldWorld Tour bike fitter at Science to Sport
The single most common mistake amateurs make is riding a bike that's too large and too long for them. More reach than you need loads the lower back, stiffens the shoulders, and puts excess pressure on the hands — three of the five most common fit complaints, all from one measurement.
Hear it: The 1 Bike Fit Change That Costs Cyclists Watts | Roadman Cycling

PRACTICAL APPLICATION

DO THIS WEEK

Map where it hurts and when
Note exactly where pain or numbness starts — knees, back, hands, feet, neck — and at what point in the ride. Pain in the first 30 minutes suggests a static issue (saddle height, reach). Pain that builds after 90 minutes is more likely dynamic (flexibility, core, fatigue). This tells a fitter where to look first.
Check three quick markers at home
Saddle height: slight bend (25–35 degrees) in the knee at the bottom of the pedal stroke. Reach: elbows should have a slight bend on the hoods, not locked out. Saddle tilt: level or very slightly nose-down — a saddle nose pointing upward loads your perineum and lower back every pedal stroke.
Book a fit before your next event block
A professional fit costs £150–£300 and is valid across bikes of the same geometry. Do it 8–12 weeks before a target event so you have time to adapt. A fit done the week before a gran fondo gives your body no time to adjust.

COMMON MISTAKES

WHAT CYCLISTS GET WRONG

MISTAKEAssuming pain is normal and just pushing through it.
FIXPain is a signal, not a rite of passage. Most cycling pain has a mechanical cause with a mechanical fix — address it before it becomes chronic.
MISTAKEBuying a new saddle to fix every discomfort.
FIXA saddle problem is often a height or tilt problem. Change the position before spending £200 on a new saddle that may not help.
MISTAKEGetting a fit once and ignoring it when flexibility or fitness changes.
FIXYour position should be reviewed after major flexibility changes, weight shifts, age-related postural changes, or when moving between bikes.

FAQ

FREQUENTLY ASKED QUESTIONS

How much does a professional bike fit cost?

Expect to pay £150–£300 for a thorough professional fit in the UK. Dynamic fits with video analysis sit at the higher end. It's a one-off cost that's valid across multiple bikes of similar geometry and typically saves the cost in avoided physio appointments.

Can I do my own bike fit at home?

You can get the basics right — saddle height, rough reach — using online calculators and a helper with a camera. But a self-fit can't assess your pedalling dynamics, flexibility asymmetries, or cleat alignment. It's a starting point, not a replacement for a professional assessment if you have recurring issues.

Is knee pain always a bike fit problem?

Not always, but it's the first thing to rule out. Saddle height is the most common cause: too high causes pain behind the knee, too low causes pain at the front. If adjusting saddle height doesn't resolve it, cleat position and float are the next check.

How long does a professional bike fit take?

Between 90 minutes and 3 hours depending on the level of assessment. A basic fitting using static measurements takes less time; a dynamic fit with video analysis and cleat work runs longer. Bring your cycling shoes and shorts.

Do I need a new bike or just a bike fit?

Usually a fit first. Most issues can be resolved within the adjustment range of your current bike — stem length, saddle position, handlebar height. You may discover the frame is genuinely the wrong size, but that's the exception, not the rule.

Should I get a fit for a new bike before I buy it?

Yes — or at minimum get your measurements from an existing fit so you can spec the new bike correctly. Buying a frame and then discovering you need a shorter stem and a different bar width is an avoidable expense.

RELATED EPISODES

HEAR THE CONVERSATIONS

I Tried A Bike Fit From Team GB Bike Fitter (Here's What Happened)

The 1 Bike Fit Change That Costs Cyclists Watts | Roadman Cycling

5 Bike Fit Mistakes | Roadman Cycling Podcast