CoachingAnswer

HOW SHOULD I ADJUST MY HEART RATE ZONES AS I GET OLDER?

By Anthony WalshRoadman CyclingUpdated 29 May 2026

WHO THIS IS FOR

IS THIS YOU?

The masters rider whose zones feel off

Your intervals feel mis-targeted and your easy days are draining you more than they should.

The rider new to heart-rate training

You're setting up zones for the first time and want to know whether the formula is good enough.

THE ROADMAN VIEW

Heart rate is the metric most masters cyclists never re-set. You ran a test five years ago, the zones went into the head unit, and you've trained off them ever since — even as your max heart rate has dropped 5 or 10 beats. The result is intervals chasing numbers your heart can no longer reach, and easy rides that secretly sit in zone 3 because the ceiling moved without you noticing.

The other trap is the 220-minus-age formula. It's a population average that's off by 10 beats or more for many individuals, and it gets less reliable past 50. Anthony has covered this with Stephen Seiler on the podcast, and Seiler's view is consistent: do a real test, or take the highest heart rate you've actually hit in a maximal effort in the past few months, and build the zones from that.

The deeper truth is that as zones compress with age, the discipline of the easy/hard split matters more, not less. There's less room in each zone, so the grey-zone drift that bothered you at 35 wrecks workouts at 55. The riders who use heart rate well after 50 use it alongside power — power as the primary number, heart rate as the recovery and drift signal that catches what power can't see.

EXPERT EVIDENCE

WHAT THE EXPERTS SAY

Professor Stephen SeilerExercise physiologist, polarised-training researcher
The 220-minus-age formula is a population estimate, not an individual one. For an individual masters athlete it's often off by 10 beats or more. Take a real max HR from a recent maximal effort and rebuild zones from that, especially through your 40s and 50s when max HR is meaningfully drifting.
Hear it: Secret To Cycling Fast At A Low Heart Rate | Prof Seiler
Joe FrielAuthor of Fast After 50 and The Cyclist's Training Bible
Masters athletes should treat heart rate as one signal in a stack, not the only metric. Power gives the cleanest read on output; heart rate catches recovery state, hydration, heat and accumulated fatigue. Together they're far more useful than either alone.
Hear it: The Training Secret To Going FASTER After 40 | Joe Friel

PRACTICAL APPLICATION

DO THIS WEEK

Find your real max heart rate
Take it from a recent maximal effort — a race finish, or a hard 5-minute test followed by a 60-second sprint — or from a formal lab test. Don't use 220-minus-age; it's a generic estimate, not yours.
Set zones off your actual max
Most masters use rough percentages: Z1 under 68%, Z2 68–75%, Z3 75–83%, Z4 83–90%, Z5 90%+ of max HR. Calibrate from your own field data, not a generic chart.
Re-test every 6–12 months past 45
As you cross 45, 50, 55, max HR drifts. Old zones become wrong zones. The drift is small enough to miss week-to-week and large enough to wreck a training block over a year.
Use heart rate as the secondary signal
Ride to power on intervals, and watch heart rate for drift. Rising HR at steady power usually signals fatigue, dehydration or accumulated load — a useful early-warning system masters riders should learn to read carefully.

COMMON MISTAKES

WHAT CYCLISTS GET WRONG

MISTAKEUsing the 220-minus-age formula.
FIXIt's a population average that misses most individuals by 5–15 bpm. Field-test or use a recent maximum from your own data.
MISTAKENever re-testing zones as you age.
FIXRe-check every 6–12 months past 45. Old zones become wrong as max HR drops, and the drift is too subtle to notice without a deliberate test.
MISTAKETreating heart rate as the primary metric for interval pacing.
FIXPower is more responsive and less affected by sleep, heat and stress. Use power to pace, heart rate to read state.

FAQ

FREQUENTLY ASKED QUESTIONS

At what rate does max heart rate decline with age?

Roughly 0.5–1 beat per year on average from the mid-20s, but individual variation is large. Some cyclists hold a high max well into their 50s; others drop 1 bpm a year reliably. Field-test rather than guess.

Is the 220-minus-age formula accurate for cyclists?

Not reliably. It can be off by 10 beats or more for individuals, and the error tends to widen with age. Use it only as a rough ballpark; rely on a recent maximal effort or proper field test for setting zones.

Should masters cyclists use power or heart rate?

Both, with power as the primary. Power gives the cleanest read on output and isn't affected by sleep, heat or hydration. Heart rate is invaluable as a recovery and drift signal that catches what power can't see.

How often should I re-test my zones as a masters cyclist?

At least once a year past 45, every 6 months if your numbers feel off. Don't run year-old zones into your fifth season — they will quietly drift into the wrong zones without you noticing.

Does heart rate drift change with age?

Yes — masters riders typically see more cardiovascular drift on long efforts, particularly in heat. Drift becomes a more useful signal of accumulated fatigue and dehydration; learn to read it, especially on rides of three hours or more.

Why does my heart rate stay high after hard rides as I age?

Recovery of resting heart rate slows as the cardiovascular system takes longer to settle after hard efforts past 40. It's normal in itself, but a persistently elevated HR for 24+ hours after a hard session is a clear signal to take the next day easy.

RELATED EPISODES

HEAR THE CONVERSATIONS

Secret To Cycling Fast At A Low Heart Rate | Prof Seiler

The Training Secret To Going FASTER After 40 | Joe Friel

80/20 Training to Ride Faster | Dr Stephen Seiler