A runner photographed from behind, moving at a relaxed easy pace along a flat gravel canal towpath

Run Slow to Run Fast: But Why Does Slow Running Help Get Faster?

Are you constantly pushing your pace to try and become a better runner? You may be surprised to learn that sometimes, slower running can make you a faster runner!

As counterintuitive as it may seem, slowing down during training could take your speed and endurance up a notch.

So why is running slowly so important? Let’s take a look.

What Makes Slow Running So Effective?

A runner keeping an easy, comfortable effort on a suburban sidewalk during light rain

Slow running builds cardiovascular fitness and endurance because it lets you run more total minutes at an effort your body can absorb, week after week.

By jogging at a slower pace, you can reduce the stress on your joints.

A gentle pace also gives you more time to practice proper form. And proper form improves your efficiency and reduces the chance of injury.

Running slowly allows your body time to adapt and become stronger, thus making faster runs easier over time.

But it’s not just about the slow pace, it’s about the variety!

How to Use the 80/20 Rule in Running

The 80/20 rule is a training strategy that emphasizes slow and easy runs most of the time (80%) but also encourages dedicated effort intervals (the other 20%).

The 80/20 split comes from research by exercise physiologist Stephen Seiler. He found that elite endurance athletes across several sports do roughly 80 percent of their sessions at genuinely easy intensity. Training spread that way beats training that sits mostly in the moderate middle.

The idea is to have most of your weekly mileage at a low intensity, allowing your body to recover and adapt.

During the remaining 20%, you make more strenuous efforts like tempo runs or intervals to help further improve performance.

It is a pretty polarized training rule, isn’t it?

But the idea is great because it reminds us about the benefits of those slow runs, minimizing injury risk and maximizing our fitness by adding variety.

However, the 80/20 rule is a simplified form of training that only talks about training at a low intensity and then at a high intensity (polarized, yes).

A less polarized training plan may be more effective.

For example, 75% at low intensity, 15% at tempo intensity, and 10% at high intensity.

But in any case, remember to include those slow runs in your weekly schedule.

How Slow Should Your Easy Runs Be?

Your easy runs should be run at a comfortable yet slightly challenging pace. You can carry on a conversation but still, challenge your aerobic system.

Easy pace is relative to your own fitness, not a fixed number on the watch. A good working target is roughly 90 seconds to two minutes per mile slower than your current 5K race pace.

If you prefer to train by heart rate, easy running sits at roughly 65% to 75% of your maximum. Drift above that and you are no longer getting the easy-run benefit.

When you run with a low heart rate, you can maintain a conversation without getting winded.

How to Run at a Much Slower Pace?

To run much slower, you should focus on taking relaxed strides with your legs and arms as you run.

Aim for shorter, softer, quicker steps, and let your foot land under your body rather than reaching out in front. Lengthening your stride to slow down is what causes overstriding.

Work on your breathing. Breathe from your belly rather than your chest, settle into a rhythm that feels natural to you, and keep your shoulders and hands loose.

You should also warm up first with a few minutes of easy jogging and dynamic moves like leg swings and high knees. Save the static stretching for after the run.

Focus on making small goals, such as completing two miles, instead of worrying about reaching certain speeds early in the process.

Why You Should Run Slow to Run Fast

As a result of all these adjustments and adaptations, it will feel much easier when it comes time for you to increase your speed.

1. Running Slow Reduces the Risk of Injury

A gentle pace can reduce the risk of injury by gradually allowing your body to adjust and adapt to the running motion.

Running too fast or with too much intensity can strain your body unnecessarily, leading to increased chances of muscle or joint injuries.

A conversational pace also gives your body the time to warm up properly before you increase your speed and intensity, which is essential for avoiding injuries.

2. Running Slow Increases Resistance to Fatigue

Jogging slowly increases resistance to fatigue because it encourages slower and more consistent pacing.

When you run faster, your body is forced to expend more energy. As a result, you hit a wall much earlier when it comes to running endurance.

A slow pace allows your body to use less energy with each step and spread the exertion over a longer time.

This helps you increase your overall stamina and resist fatigue for longer (which makes sense for all kinds of physical activities).

3. Running Slow Helps Your Body Become More Efficient At Burning Fat

Running slow shifts a bigger share of your fuel from carbohydrate to fat. That teaches your body to spare its limited glycogen stores, which is what stops you fading late in a long run. It is not a weight-loss shortcut, though: faster running burns more total calories per minute, and body weight still comes down to overall energy balance.

Keeping your runs at a moderate to slow tempo also reduces joint strain and leaves you fresh enough to train again the next day.

If you are just starting out, run at a pace that suits your fitness level to ensure you don’t push yourself too hard and risk injury or burnout. 

4. Running Slow Improves the Aerobic Energy System

A slow pace can improve the aerobic energy system.

When you run slowly, your body has to draw on its aerobic energy system, fueled by oxygen, for more sustained and longer-lasting energy during exercise.

It can help increase your body’s capacity for using oxygen more efficiently and helps build the endurance capability of your heart and lungs.

This type of aerobic training also allows your muscles to use oxygen faster and burn fat more effectively compared to when running at higher intensities.

5. Running Slow Reduces the Risk of Overtraining

A conversational pace can be a great way to reduce the risk of overtraining.

By running at a slower pace, you are not putting as much strain on your body, making it easier to recover after each workout.

Slow training runs allow you to increase your training volume and intensity gradually. That helps prevent burning out or overloading your body too quickly (which is a problem with many athletes).

The Bottom Line

If you’ve been running for a while, you know that sometimes it is hard to run that slow!

You have to actively focus on keeping a steady, relaxed pace. It is so tempting to nudge the speed up from week to week.

Next time you head out, slow down and see whether the 80/20 rule, or the 75/15/10 version above, works better for you.

Read more: Did you know the average human running speed is around 6 miles per hour?

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