Speed Base vs. Aerobic Base: Rethinking How We Develop Young Swimmers

In swimming, the conventional model has long been clear:

Build the aerobic base first.

Add speed later.

More yards.

Longer practices.

Endurance before everything else. It’s a system many of us grew up in. It’s what we were taught. And for a long time, I followed it too.

But it’s worth asking a simple question:

What if we’ve been building in the wrong order?

The Case for Speed First

For most of my career, I was taught to believe something simple: Swimming is an endurance sport.

That idea became a kind of North Star. Any time something didn’t quite make sense, any time a question came up about training, volume, or structure, the answer was always the same: It’s an endurance sport.

And for a long time, that was enough.

But eventually, you start to look closer.

You watch races more carefully.

You study movement more deeply.

You pay attention to what actually separates swimmers.

And you begin to wonder: What if that’s not the full picture?

At its core, swimming is not purely an endurance sport.

Swimming is a technical, skill-dominant sport performed at speed.

Even in distance events, success isn’t defined by who can simply “go longer.”

It’s defined by who can hold the most efficient, organized movement at race velocity. Can you sprint? Were you ever taught the mechanics?

That shifts the developmental question entirely.

Not: How much can a swimmer do?

But: How well can they move—especially when it matters most?

What Other Sports Already Understand

This isn’t a radical idea. Other sports have been building this way for years.

Track & Field

Coaches like Percy Cerutty emphasized natural movement, power, and sprint mechanics early in development. Even in endurance runners, speed and coordination were foundational.

Similarly, Arthur Lydiard—often associated with aerobic base training—still incorporated strides, mechanics, and efficient movement patterns early on.

They didn’t ignore endurance.

They just didn’t build it on top of poor movement.

Cycling

The development model used by British Cycling focuses early on:

• Pedaling efficiency

• Cadence control

• Neuromuscular coordination

Before volume becomes the priority.

They understand something critical: You don’t build capacity first—you build the system that will use that capacity.

Swimming Has Always Known This—We Just Drifted Away

Go back to James “Doc” Counsilman.

His work consistently emphasized:

• Stroke efficiency

• Technical precision

• Understanding the water

  
  

He understood that skill is not separate from performance—it is performance.

Somewhere along the way, we shifted.

We began to equate:

• more yards = better swimmers

• longer practices = more development

  
  

And in doing so, we started asking young swimmers to train before they truly knew how to move.

The Problem with Early High Volume (Especially 14-Under)

Most 14-under swimmers today are not lacking effort.

They are lacking:

• Technical clarity

• Speed mechanics

• Mental capacity for long-term development and goal setting

• Time and space to actually learn the craft

They are swimming a lot. But they are not necessarily learning a lot. And that distinction matters. Because: Endurance doesn’t fix inefficiency—it reinforces it.

If a swimmer doesn’t understand:

• how to hold a line

• how to apply force effectively

• how to move with rhythm and timing at rate

Then more volume simply grooves those limitations deeper.

Speed Is a Skill—Not Just an Output

Sprinting is not just “going all out.” It' s a skill and needs to be taught as such. It has its own unique rhythm, coordination, and muscular connective expression.

I've heard coach say for year, "well she/he is not a sprinter." or "they aren't tall enough so why bother teaching them to sprint."

Sprinting is:

• Precision under pressure

• Alignment at velocity

• Timing that holds together at speed

It is highly technical.

And like any skill, it requires:

• Focus

• Intention

• Repetition with quality

• And most importantly… time. You cannot rush it.

And you cannot bury it under fatigue. Sprinting can and should be taught. It's not reserved for the special few who have the innate ability to move at speed. Now, some will be better at it than others but no matter the distance 1500/1650 to the 50 learning how to sprint is vital to race success.

Why Skill and Speed Must Come First

Young athletes are in a unique developmental window.

They are:

• Highly adaptable neurologically

• Able to learn coordination quickly

• Able to build movement patterns that last

This is the time to teach:

• How to move fast

• How to feel the water

• How to stay aligned under speed

Not just how to endure. Because eventually, endurance will come. But when it does, it should be built on top of clarity, efficiency, and control

A Shift in Perspective

This isn’t about eliminating aerobic work.

It’s about reordering priorities:

1. Teach the skill

2. Develop speed and coordination

3. Then build the capacity to sustain it

Skill and speed first.

Volume and endurance second.

A Note to Coaches

If this feels different—or even uncomfortable—you’re not alone. Many of us were never taught another way. The system we inherited told us:

More is better.

And for a long time, we believed it. I did too. But growth in coaching requires something else:

The willingness to question what we’ve always done.

To look at other sports.

To experiment.

To evolve.

Not to abandon tradition—but to refine it.

Where We Go From Here

The young coach today has an opportunity.

To:

• Learn from disciplines outside of swimming

• Integrate science and skill development

• Create environments where athletes don’t just train—but learn

  
  

Because ultimately, our job is not to produce swimmers who can survive training.

It’s to develop swimmers who understand the water.

Final Thought

Most young swimmers don’t need more volume.

They need:

• Better movement

• Better awareness

• Better teaching

  
  

They need time to develop the craft.