How slow should easy runs be?

Typically 1:30 to 2:30 per mile slower than 5K pace, or 65 to 75 percent of max heart rate. For a runner with a 25 minute 5K, that is around 9:30 to 10:30 per mile.

Will running slow make me slow?

No. It is the opposite: easy volume builds the aerobic base that determines how fast you can run at every distance, and it preserves the freshness that makes hard sessions productive. Runners who run everything moderately hard are the ones who plateau.

What if easy pace feels too slow to be worth it?

That feeling is nearly universal and it is wrong. The adaptations from easy running respond to duration, not effort. A 45 minute easy run at a pace that feels trivial is doing exactly what it is meant to.

Should I walk on hills to stay in the easy range?

Yes, if that is what keeps the effort easy. Hills push heart rate up regardless of pace; walking or shuffling the steep sections keeps the run doing its job.

Guide

Why easy runs are easy

The most common error in recreational running is not a missing session or the wrong workout. It is that easy runs are run too hard, which quietly ruins the hard sessions they are supposed to support.

What easy pace actually is

Easy running sits at roughly 65 to 75 percent of maximum heart rate, which for most runners is somewhere between 1:30 and 2:30 per mile slower than their 5K pace. It should feel like something you could sustain for hours, and you should be able to speak in full sentences.

That range is wide, and the correct answer within it is almost always the slower end. If you are unsure whether a run was easy, it was not.

What it is buying

Easy running builds the machinery that everything else runs on. Capillary density in the working muscle, mitochondrial volume, stroke volume of the heart, the ability to use fat as fuel at a given pace. These adaptations respond to time spent running far more than to intensity, which is why volume at low intensity is the most efficient way to buy them.

It also builds structural tolerance. Tendons, bone and connective tissue adapt slowly and to accumulated load, and easy mileage is how you accumulate that load without the injury risk that comes with speed.

Crucially, it does all of this while leaving you recovered enough to run the hard sessions hard. That is the part people miss. Easy running is not the opposite of hard training; it is what makes hard training possible.

How to find your easy pace

The talk test. The most reliable field method and it needs no equipment. If you cannot speak a full sentence without gasping, you are going too fast.
Nose breathing. Being able to breathe through your nose for most of the run is a good crude ceiling. It will feel absurdly slow at first.
Heart rate. 65 to 75 percent of measured maximum. Watch for cardiac drift on longer runs: it is normal for heart rate to climb 5 to 10 beats at a constant pace over an hour, and chasing a heart rate cap by slowing down repeatedly is fine.
From a race result. The most precise way. A recent race gives you a VDOT, and the easy range falls out of it directly.

How much of the week should be easy

Roughly 80 percent, measured in time or distance rather than sessions. In a five-run week with two quality days, that usually means three fully easy runs plus the easy portions of the quality days, since the hard part of a threshold session is 20 to 40 minutes inside an hour of running.

This is the polarized distribution, and it holds across almost every serious endurance tradition: a large easy base, a small amount of genuinely hard work, and very little in between. The distribution matters more than the specific workouts.

Frequently asked

How slow should easy runs be?: Typically 1:30 to 2:30 per mile slower than 5K pace, or 65 to 75 percent of max heart rate. For a runner with a 25 minute 5K, that is around 9:30 to 10:30 per mile.
Will running slow make me slow?: No. It is the opposite: easy volume builds the aerobic base that determines how fast you can run at every distance, and it preserves the freshness that makes hard sessions productive. Runners who run everything moderately hard are the ones who plateau.
What if easy pace feels too slow to be worth it?: That feeling is nearly universal and it is wrong. The adaptations from easy running respond to duration, not effort. A 45 minute easy run at a pace that feels trivial is doing exactly what it is meant to.
Should I walk on hills to stay in the easy range?: Yes, if that is what keeps the effort easy. Hills push heart rate up regardless of pace; walking or shuffling the steep sections keeps the run doing its job.

Stop reading. Start training.

This is the theory. Shed is the schedule.

Knowing what a threshold run is for does not tell you which Tuesday to run one, or how fast, or what to do when you miss it. Shed writes every session of your race block and adjusts it as you train. Ask it where a number came from and it will tell you.

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