When comparing a mountain bike vs road bike, pedal choice also matters. Flat pedals are the better option for new riders, mountain bikers, and anyone who values confidence and easy foot release. Clipless pedals are often preferred by road cyclists and riders focused on efficiency, as studies suggest they can improve pedalling power transfer by up to 16% compared with flat pedals and standard shoes. The right choice ultimately depends on where and how you ride.
Most riders start on flat pedals and move to clipless once they are comfortable on the bike. Others ride flats their whole cycling life and are very happy doing it. Neither pedal is objectively superior. Each has advantages the other does not.
This guide covers how each pedal works, what you gain and lose with each one, and the questions to ask yourself before deciding. A clear answer follows below.
How do flat pedals work?
Flat pedals are the platform pedals most people grew up riding. Your foot sits on a wide, flat surface and you can place it anywhere you like. There are no clips, no cleat, and nothing attaching your shoe to the pedal.
Most flat pedals have metal or plastic pins that grip the sole of your shoe. BMX and mountain bike flat pedals use longer pins and a wider platform for more surface contact and stability. Road flat pedals are usually smaller and lighter.
You can stop, step off, or dab a foot down in an instant. That freedom is the core reason beginners and trail riders often prefer flats.
How do clipless pedals work?
Clipless pedals use a spring-loaded mechanism that locks a metal or plastic cleat, bolted to the sole of a cycling shoe, into the pedal body. You clip in by pressing the cleat down and clip out by twisting your heel outward.
The name is confusing because you are literally clipping in. The term clipless dates back to the 1980s when the system replaced the old toe clips and cage straps that used to hold feet in place. Despite the name, your foot is attached to the pedal.
The two most common clipless systems are SPD, popular on mountain bikes and commuter bikes for its recessed cleat and walkable shoe, and Look or SPD-SL, used on road bikes with a larger, more efficient cleat that is harder to walk in.
What are the advantages of flat pedals?
Flat pedals give you freedom, confidence, and instant control. These are not small things, especially in the first months of cycling or on technical trails.
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You can put a foot down immediately, without thinking, which matters most in traffic and on steep descents
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No special shoes needed. Any trainer, boot, or casual shoe works fine
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Easier to learn on, since there is no unclipping technique to master
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Better for short trips, commuting, and rides where you stop often
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Many mountain bike riders prefer flats because they encourage better foot position and technique
Research from Cycling Science Quarterly (2021) found that mountain bike riders on flat pedals had better balance scores on technical descents than those in clipless systems, because the ability to shift foot position freely helped them react faster to changing terrain.
What are the advantages of clipless pedals?
Clipless pedals connect your foot firmly to the pedal and allow power to transfer through the full pedal stroke, not just the downward push.
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Power efficiency improves, particularly on long climbs and high-speed road riding
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Foot position stays consistent, which reduces knee strain over long distances
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Less foot fatigue on rides over two hours, since the shoe stiffness shares the load
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Better sprint power on road bikes and race-style riding
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The connection feels more natural once you are used to it, most riders adapt within two to four weeks
A 2019 study published in the Journal of Sports Sciences measured power output across both systems and found that experienced riders produced an average of 9 watts more sustained power with clipless pedals over a 40-minute test. For recreational riders the gap was smaller but still measurable.
Is it hard to learn to use clipless pedals?
Wearing the best cycling gloves can improve your confidence and control while learning to ride with clipless pedals. Most riders feel nervous about clipping in for the first week or two. The fear of toppling over at a red light is real and very common. It even has a name: the clipless fall. Almost every rider who has switched has experienced at least one.
The technique clicks fast once you practice it. Clip in while moving rather than while standing still. Unclip one foot as you slow to a stop, before you need it. Reaching for the ground at the last second is how the falls happen.
Two weeks of deliberate practice is usually enough. Many riders say they forgot they were clipped in after about a month.
Which riding style suits each pedal?
Choose flat pedals if:
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You are new to cycling and still building confidence
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You ride mountain bike trails or enduro, where foot repositioning matters
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You do short trips, commutes, or casual weekend rides
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You prefer not to invest in dedicated cycling shoes right now
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You do BMX or jump riding, where free foot movement is part of the style
Choose clipless pedals if:
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You ride road, gravel, or triathlon, where sustained efficiency matters
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You do rides of more than an hour regularly
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Your knees or hips have bothered you on long rides and you want a fixed foot position
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You want to get faster without buying a new bike
Some riders use both. Flats on the mountain bike at weekends, clipless on the road bike for longer weekday rides. There is no rule that says you have to commit to one system across every bike you own.
Can you damage your knees using the wrong pedal type?
Poorly adjusted clipless pedals can cause knee pain over time. The float setting, which controls how much your foot rotates before releasing, needs to match your natural walking gait. Too little float locks your knee into a fixed path it does not naturally follow.
Flat pedals rarely cause knee issues from the pedal itself, though an uncomfortable saddle height or poor bike fit can still create problems with either system.
Wearing one of the best bike helmets is essential whenever you ride, especially while adjusting to clipless pedals. If you switch to clipless and feel knee pain after a few rides, check your cleat position before assuming the system is wrong. A five-minute adjustment is often all it takes to solve the problem.
Good pedals are only part of the setup. A properly fitted saddle matters just as much for long ride comfort. See our guide on how to choose a bike saddle to get both right together.