Keep Easy Days Easy

A practical guide to keeping easy runs easy — talk test, RPE, common mistakes, and why late-September training is when recreational runners most often push too hard.

Runner jogging relaxed on a quiet tree-lined path in soft late-September morning light

Fall training has a quiet trap: the calendar looks serious, race week is closer, and suddenly Tuesday’s “easy” run feels like a soft tempo.

You don’t need a new plan. You need a clearer definition of easy — and a couple of checks you can use mid-run without staring at your watch.

1. What “easy” is for

Easy runs are the volume that builds your aerobic base, practices running while recovered, and makes the hard days actually hard. They are not “slow junk.” They are the majority of your week when training is going well.

Endurance-training research on intensity distribution keeps finding the same broad pattern in successful athletes: most sessions sit at low intensity, with a smaller share reserved for harder work. Stephen Seiler’s widely cited review of elite endurance practice describes roughly an ~80% low / ~20% high split of training time (often popularized as “80/20”), with comparatively little time parked in the moderate middle (Seiler, 2010, International Journal of Sports Physiology and Performance). A 2024 systematic review still treats polarized (high share of easy + some hard) as a meaningful training model — useful context, not a personal mandate (Sports Medicine meta-analysis, 2024).

For recreational runners, the practical translation is simpler than the research papers: most of your miles should feel conversational. If every “easy” day is medium-hard, you never fully recover — and your workouts stop teaching you anything new.

2. The talk test (your free mid-run check)

You do not need a lab or a perfect heart-rate zone file to keep easy days honest.

The CDC’s talk-test rule of thumb:

Moderate intensity: you can talk, but not sing
Vigorous intensity: you cannot say more than a few words without pausing for breath

(CDC — How to Measure Physical Activity Intensity)

For an easy run, aim for the comfortable end of that spectrum: full sentences without gasping. If you can only manage short phrases, you’re drifting into workout territory. Slow down, shorten your stride, or add a walk break until sentences come back.

A useful mid-run script: pick a familiar sentence (“I am keeping Tuesday easy”) and say it out loud every mile or so. If the sentence breaks into panted fragments, the pace is the problem — not your discipline.

3. Pair it with RPE (0–10)

Perceived effort fills gaps the talk test can’t cover — hills, wind, heat leftovers, or days when talking out loud feels awkward.

A simple 0–10 scale many coaches use for easy days:

RPE	Feel	Easy-day use
2–3	Very light / recovery jog	Optional recovery or cool-down
3–4	Light, conversational	Default easy and most long-run minutes
5–6	Moderate, short phrases	Not an easy day — save for steady / tempo work
7+	Hard	Workouts only

The CDC’s relative-intensity guide places moderate effort around 5–6 and vigorous around 7–8 on a 0–10 scale from sitting to max (CDC measuring intensity). Easy training runs should usually live below that moderate band — closer to relaxed conversation than “working.”

Your watch and your body will disagree sometimes. When they do, trust how the run feels, not the number on the screen.

Watch pace looks faster than usual, but you can still talk in full sentences and RPE feels easy → that is an easy day. Keep it. Fitness improved, conditions helped, or both.
Watch pace looks slower than usual, but you can’t finish a sentence or RPE has crept up → that is not an easy day anymore. Slow down (or walk briefly) until talk and RPE match “easy” again.

4. Why late September makes this harder

This week of the year is when easy days most often quietly die:

Race goals feel closer, so every mile starts to feel like a statement
Cooler mornings invite “just a little faster”
Group runs and Strava can turn a recovery jog into an accidental race
Residual late-summer heat or humidity still makes pace look “slow” while effort is already medium

Pace is a lagging indicator. Effort is the control knob. On easy days, the job is effort control, not pace pride.

5. Common mistakes (and the fix)

Chasing last month’s easy pace. Fitness, sleep, stress, and weather move. Recheck talk test / RPE each run.

Making easy days “productive.” Hills, surges, and “just a few pickups” turn recovery into another stressor. Save strides for planned days (and keep them short).

Matching someone else’s easy. Their easy may be your tempo. Run your sentences, not their splits.

Using heart rate alone without context. Heat, caffeine, poor sleep, and hills all drift HR. Use HR as a sanity check after the fact if you like data — not as a mid-run courtroom.

Skipping the walk break out of pride. A 30–60 second walk that restores conversational breathing is still an easy run. A forced shuffle that keeps you gasping is not.

6. A simple Tuesday checklist

Before you leave:

Today’s purpose is recovery / aerobic volume — not fitness theater
You’ll check the talk test at least twice
Hills or heat mean slower pace, same easy effort
If you can’t speak in full sentences by mile 1, you started too fast

After you finish:

Could you have held a conversation most of the way?
Did you finish wanting a little more, not wrecked?
Would tomorrow’s workout still feel available?

If those answers are yes, you did the easy day correctly — even if the average pace looks “embarrassing” on your phone.

7. When to intentionally not stay easy

Easy discipline is not anti-hard. Hard days still matter. The point is polarity: easy stays easy so hard can be hard.

If your plan has a workout, race-pace session, or hill repeats on the calendar, do that work on that day. Don’t smuggle intensity into the easy ones because you feel antsy in September.