Why Is Freestyle the Fastest Swimming Stroke? The Science Explained

Introduction

Have you ever watched swimmers race and wondered why freestyle looks so much faster than breaststroke or backstroke? You may even have experienced the opposite in your own swimming. Freestyle is supposed to be fast, yet your body may feel slow, your legs may sink, or every breath may break your rhythm. So, why is freestyle the fastest swimming stroke if it can still feel slow when your technique is off? The answer is more than simply moving your arms faster.

In my coaching experience, I have seen swimmers try to increase their freestyle speed by kicking harder or moving their arms faster. Often, the bigger issue is extra drag caused by body position, breathing, or timing. Front crawl combines a streamlined body position, effective arm propulsion, body rotation, stroke timing, and controlled resistance. Research on front crawl also shows that swimming speed depends on the balance between propulsion and drag. Once you see how these parts work together, it becomes much easier to see why front crawl is the fastest competitive surface stroke.

Is Freestyle the Same as Front Crawl?

Freestyle and front crawl are often used as if they mean the same thing, but there is a small difference.

Freestyle is a race category. Front crawl is a swimming technique.

According to World Aquatics, swimmers may use any stroke in a freestyle event, but front crawl is typically used because it is the fastest of the four major competitive styles.

So, when people ask why is freestyle the fastest swimming stroke, they are usually asking why front crawl is faster than the other main competitive strokes.

This difference also matters for beginners. If a coach tells you to practice freestyle, they are usually teaching the front crawl technique. If you want to improve your form, freestyle swimming tips can help you work on body position, breathing, and stroke control.

Why Is Freestyle the Fastest Swimming Stroke?

Freestyle is fast because several parts of the stroke work together.

The main reasons are:

• Streamlined body position
• Low unnecessary drag
• Alternating arm movements
• Steady forward propulsion
• Body rotation
• Efficient stroke timing
• A useful flutter kick
• A high but controlled stroke rate
• Good stroke length

Research on front crawl shows that swimming speed depends on the balance between propulsive force and resistance. As speed increases, resistance also rises sharply. This makes good technique important for fast swimming.

How Does Body Position Make Freestyle Faster?

Body position has a big effect on freestyle speed.

A swimmer wants the body to stay long and close to the surface. The head stays in a neutral position. The hips stay near the surface, while the legs remain behind the body.

This helps reduce the amount of water the swimmer has to move through.

Now think about what happens when the hips drop.

More of the body sits lower in the water. This can increase resistance and make forward movement harder.

The same thing can happen when a swimmer lifts the head too high to breathe. The hips may drop, which can increase drag. Proper breathing technique can also help you keep your head and body position under control during freestyle.

A good freestyle body position helps the swimmer move forward without wasting as much energy. If you are working on your own technique, our guide to swimming technique improvement covers body position, rotation, breathing, arm technique, and stroke timing.

How Does Drag Affect Freestyle Speed?

Drag is the resistance created by the water as your body moves through it.

Every swimmer has to deal with drag. The goal is to reduce unnecessary resistance.

This becomes even more important at higher speeds. Research on front crawl shows that resistive force rises sharply as swimming velocity increases.

In simple terms, swimming a little faster can require much more effort.

This is why fast swimming is not just about creating more force.

A swimmer also needs to control:

• Head position
• Hip position
• Body alignment
• Leg position
• Arm recovery
• Body rotation

Even small changes can affect how much resistance the swimmer creates.

This is one reason skilled swimmers spend so much time working on technique.

Why Does Freestyle Have Continuous Arm Propulsion?

Freestyle has an advantage in the way the arms move.

The arms work in an alternating pattern. One arm is producing propulsion while the other arm recovers and prepares for its next stroke.

This helps reduce long gaps between propulsive phases.

The swimmer still has changes in speed during each stroke cycle. Freestyle does not create constant speed from one moment to the next.

However, the alternating arm action helps maintain forward movement through the stroke cycle.

The arms and hands provide a large part of the useful propulsive force in front crawl.

This is one reason freestyle can maintain a high speed without the larger interruptions found in some other strokes.

How Does Body Rotation Help Freestyle?

Good freestyle is more than an arm movement.

The swimmer rotates the body around its long axis during each stroke. The shoulders and hips work with this rotation as the swimmer moves through the stroke cycle.

Body rotation helps place the arm in a useful position for the pull. It also connects the upper body with the rest of the stroke.

This means freestyle speed does not come from the arms alone.

The swimmer uses:

• Shoulders
• Hips
• Core
• Arms
• Legs

as part of one coordinated movement.

Good rotation can also help the swimmer maintain a smooth stroke rhythm.

Does the Flutter Kick Make Freestyle Faster?

Yes, but the kick is only one part of the answer.

The flutter kick can help with:

• Forward propulsion
• Body position
• Balance
• Stroke rhythm
• Stability

However, it would be wrong to say that the flutter kick is the main reason freestyle is the fastest stroke.

Research on front crawl kicking has produced mixed findings about how much the kick contributes to propulsion at different speeds.

The kick supports the whole stroke. It works with the arms, body position, rotation, and timing.

For many swimmers, the kick also helps keep the legs from dropping too low. This can help limit extra resistance.

So, freestyle speed does not come from kicking harder alone.

Does a Faster Stroke Rate Make Freestyle Faster?

Not always.

Stroke rate means how often a swimmer completes a stroke cycle.

Increasing stroke rate can help increase swimming speed. But simply moving your arms faster does not guarantee faster swimming.

There needs to be a balance between stroke rate and stroke length.

Stroke length is the distance a swimmer travels during a stroke cycle.

A swimmer can increase speed by:

1. Taking more strokes per minute
2. Covering more distance with each stroke
3. Improving both

But there is a limit.

If a swimmer increases stroke rate too much, they may lose effective propulsion and shorten their stroke too much.

This is why elite swimmers do not simply spin their arms as fast as possible.

They find a useful balance between stroke rate, stroke length, propulsion, and resistance.

Why Is Freestyle Faster Than Backstroke?

Front crawl and backstroke have several similarities.

Both use:

• Alternating arm movements
• A flutter kick
• A long body position
• Body rotation

Yet front crawl can reach a higher maximum swimming speed.

One study of competitive swimmers found an average maximum center-of-mass speed of about 1.70 m/s in front crawl, compared with 1.54 m/s in backstroke.

The front crawl swimmers also had a higher stroke frequency.

The researchers linked this difference to shorter release and recovery phases in front crawl.

Another study found lower active drag and higher swimming efficiency in front crawl compared with backstroke at the same swimming speed.

So the difference is not simply about swimming face down or face up.

Stroke timing, stroke frequency, body movement, and resistance also matter.

Why Is Freestyle Faster Than Breaststroke?

Breaststroke uses a very different movement pattern.

Both arms move together. The legs also move together. The stroke then includes a glide phase.

This creates a different speed pattern from front crawl.

Freestyle uses alternating arm actions. This allows the swimmer to keep producing forward propulsion with shorter gaps between propulsive phases.

Breaststroke also involves larger changes in body shape during the kick and recovery.

These movements create a different resistance pattern from front crawl.

This does not make breaststroke a bad stroke. Breaststroke is useful for fitness, recreation, and competition.

It is simply less suited to maximum surface speed than front crawl.

Why Isn’t Butterfly the Fastest Stroke?

Butterfly looks very powerful.

Both arms recover at the same time, and the swimmer uses a strong body wave and dolphin kick.

But swimming speed is not based on force alone.

A stroke also needs to control resistance and maintain useful forward movement.

Butterfly has larger body movements during each stroke cycle. It also requires powerful arm and body actions that can make it harder to maintain the same speed as front crawl.

Freestyle uses an alternating arm pattern that allows a swimmer to maintain a high stroke rate while one arm recovers.

That helps explain why front crawl is generally faster than butterfly in competitive swimming.

How Do the Four Competitive Strokes Rank by Speed?

The usual speed order for the four major competitive strokes is:

1. Freestyle, using front crawl
2. Butterfly
3. Backstroke
4. Breaststroke

The exact difference depends on the swimmer, race distance, skill level, and race conditions.

Still, front crawl is generally the fastest choice for competitive surface swimming.

This ranking also answers a common question from new swimmers:

If butterfly looks more powerful, why isn’t it faster?

Because swimming speed depends on more than force. Drag, stroke timing, body movement, propulsion, and efficiency all affect the final speed.

Why Does Freestyle Dominate Competitive Swimming?

Freestyle is used across many race distances.

You will see freestyle races from short sprint events to much longer races.

The stroke works well because swimmers can combine:

• High stroke frequency
• Long stroke length
• Streamlined body position
• Effective arm propulsion
• Body rotation
• Controlled breathing
• A useful kick

This gives swimmers several ways to maintain speed.

Front crawl also allows swimmers to adjust stroke rate and stroke length based on the speed and distance of the race.

That is useful because a 50-meter sprint requires a different approach from a longer freestyle race.

How Do Starts and Turns Affect Freestyle Speed?

Freestyle race speed does not come only from surface swimming.

Starts and turns can have a major effect on the final race time.

A swimmer leaves the starting block or wall at a much higher speed than their normal surface swimming speed.

The goal is to keep as much of that speed as possible during the underwater phase.

A streamlined position helps reduce resistance. Swimmers can also use underwater dolphin kicks before returning to surface swimming.

The same idea applies after a turn.

A strong push-off, good streamline, and effective underwater phase can give a swimmer a useful speed advantage before they return to the surface.

This is why elite swimmers train more than just their surface freestyle. Swimming training for athletes also covers starts, turns, race pace, and stroke technique.

They also work on:

• Starts
• Push-offs
• Turns
• Streamline
• Underwater dolphin kicks
• The transition back to surface swimming

Is Anything Faster Than Freestyle?

Yes, in some situations.

This needs a little care.

Front crawl is the fastest competitive surface stroke. But underwater movement can be faster than surface swimming for short periods.

This is especially common after a start or turn.

During this phase, the swimmer can use a tight streamline position and underwater dolphin kicks.

The body creates less resistance than it does during normal surface swimming, where the arms and legs must move through the water in a larger pattern.

So the better statement is:

Front crawl is the fastest competitive surface stroke, but underwater movement can be faster for short periods.

This is why elite swimmers pay close attention to their underwater phases.

Should You Always Swim at Maximum Speed?

No.

The fastest possible stroke speed and the best race speed are not always the same thing.

A swimmer may reach a very high speed during a short sprint. But maintaining that speed for a longer race requires much more energy.

This is why swimmers need to balance speed and energy use.

Factors such as these all matter:

• Stroke rate
• Stroke length
• Propulsion
• Drag
• Technique
• Race distance
• Energy use

For a short freestyle race, a swimmer can use a very high stroke rate and maximum effort.

In a longer race, the swimmer needs better control of pace and energy.

What this really means is that being fast is not simply about moving harder.

Good freestyle allows a swimmer to maintain useful speed without wasting too much energy.

Is Freestyle the Fastest Stroke for Everyone?

Not always.

This is an important difference.

A stroke can be fastest for competitive swimmers while still being slower for a particular beginner.

For example, a beginner may swim breaststroke faster than freestyle.

That does not mean breaststroke is faster overall.

It may simply mean the swimmer has better control of breaststroke. If you are still learning the basic strokes, swim stroke lessons can help you build better control before focusing on speed.

A new freestyle swimmer may have:

• Poor body position
• A weak or uneven kick
• Poor breathing timing
• Too much head movement
• A slow stroke rate
• Too much resistance

As technique improves, their freestyle speed may improve too.

So there is a difference between:

The fastest swimming stroke in competition

and

The stroke you personally swim fastest today.

This is useful for beginners who feel slower in freestyle than in breaststroke.

What Makes Elite Freestyle Swimmers So Fast?

Elite swimmers do not rely on one trick.

They combine many small advantages.

They control their body position. They produce useful force with each arm stroke. They manage stroke rate and stroke length. They use body rotation well. They reduce wasted movement.

They also work on:

• Starts
• Turns
• Underwater phases
• Breathing
• Race pace
• Energy use

Front crawl performance is linked to several factors, including drag, propulsion, stroke frequency, stroke length, coordination, and swimming efficiency.

What this really means is that speed comes from the whole stroke working together.

Final Thoughts

So, why is freestyle the fastest swimming stroke? The answer comes down to how the whole stroke works together. Front crawl combines a streamlined body position with effective arm propulsion, body rotation, a useful kick, and a well-controlled stroke rate. At the same time, good technique helps reduce drag and wasted effort. Research on front crawl supports the importance of propulsion, resistance, stroke length, stroke frequency, and swimming efficiency.

In my coaching experience, one of the most common mistakes is thinking that more effort always means more speed. It doesn’t. A swimmer can often gain more by improving body position, reducing unnecessary drag, and finding better timing than by simply kicking harder or moving the arms faster. When breathing, rotation, propulsion, and body position work together, freestyle becomes much more efficient. That is what gives front crawl its speed advantage over the other competitive strokes.