How do I calculate my Zone 2 heart rate by age?

Estimate max HR with the Tanaka formula, 208 minus 0.7 times your age, which is more accurate than 220 minus age. Then take 60-70% of that number. For a 30-year-old, max HR is about 187, so Zone 2 is roughly 112-131 bpm. Use the chart in this guide for a quick lookup, but remember these are estimates. A 40-year-old with a genuinely high or low max HR can sit 10-15 bpm off the chart.

Is the MAF (180 minus age) method the same as Zone 2?

They overlap but are not identical. The MAF formula, 180 minus your age with health and training adjustments, gives a single ceiling heart rate for easy training. Zone 2 is a range defined by lactate thresholds or percentage of max HR. In practice the MAF ceiling usually lands at the top of Zone 2 or just above it, so it works well as a practical cap for your easy days.

Why is the Zone 2 on my Garmin or Apple Watch wrong?

Most watches build their zones from a default max HR formula (often 220 minus age) unless you enter a tested max HR or lactate threshold. If the underlying max HR is wrong, every zone shifts with it, and Zone 2 commonly ends up 10-15 bpm too high. Set your real max HR and threshold heart rate in the device settings, or check your easy runs against your own resting and max HR instead of trusting the colored zone alone.

Should I use heart rate or pace to stay in Zone 2?

Heart rate is the better gauge for Zone 2 because it accounts for heat, fatigue, hills, and sleep, all of which raise effort at the same pace. Pace tells you how fast you are going, not how hard your body is working. The most reliable approach is to cap by heart rate and let pace be whatever it needs to be, then review the session afterward to see if your heart rate drifted upward, which signals you started too fast.

What is a normal Zone 2 heart rate range in bpm?

For most adults Zone 2 falls somewhere between 100 and 140 bpm depending on age and fitness. Younger and less aerobically trained athletes tend toward the higher end, older and well-trained athletes toward the lower end. The exact number matters less than consistency. Pick a defensible ceiling, train under it, and let your pace at that heart rate improve over the weeks.

Zone 2 Heart Rate - How to Calculate It, With a Chart by Age (2026)

Q: What heart rate is Zone 2?

For most people Zone 2 is 60-70% of maximum heart rate. For a 35-year-old with a max HR around 184, that is roughly 110-129 bpm. The more precise definition is any heart rate below your first lactate threshold (LT1), where blood lactate stays under about 2.0 mmol/L and you can still hold a full conversation. Because individual max HR varies by 10-12 bpm from the formula, the percentage range is a starting estimate that you should refine with a test or your own training data.

What heart rate is Zone 2?

Zone 2 heart rate is roughly 60-70% of your maximum heart rate. For a 40-year-old with a max HR near 180, that works out to about 108-126 bpm. It is the intensity where you can still speak in full sentences, your breathing stays controlled, and your body is burning mostly fat for fuel.

That percentage range is the quick answer. The accurate answer is a little more demanding, because the formulas everyone quotes are population averages, and your physiology is not the average. The same 40-year-old could have a true max HR of 170 or 195. That single difference moves the top of Zone 2 by more than 15 bpm, which is the gap between an easy run and an accidental tempo run.

So this guide does two things. First, it gives you a fast Zone 2 heart rate chart by age. Then it shows you the four ways to find your real number, ranked from quickest to most precise, and how to verify it against the data already sitting in your Garmin, Strava, or WHOOP.

Zone 2 heart rate chart by age

These ranges use the Tanaka max HR estimate (208 minus 0.7 times age), then take 60-70% of it. Tanaka is more accurate across adult ages than the older 220-minus-age rule. Treat these as a starting point, not gospel. Individual max HR varies by 10-12 bpm either side of the formula.

Age	Estimated max HR	Zone 2 range (60-70%)
20	194	116-136 bpm
25	191	115-134 bpm
30	187	112-131 bpm
35	184	110-129 bpm
40	180	108-126 bpm
45	177	106-124 bpm
50	173	104-121 bpm
55	170	102-119 bpm
60	166	100-116 bpm
65	163	98-114 bpm

If your own tested max HR differs from the table, scale the range to your number. The math is simply your max HR times 0.60 for the floor and times 0.70 for the ceiling.

Four ways to find your real Zone 2 heart rate

1. Percentage of true max heart rate (fast)

Take your maximum heart rate and multiply by 0.60 and 0.70. The operative word is "true." If you have ever finished an all-out 5K, a hard hill repeat session, or a max HR test, the highest number you saw is far better than any formula. For a runner whose watch has recorded 188 bpm at the end of a parkrun, Zone 2 is 113-132 bpm, regardless of what 220-minus-age suggests. The heart rate zone calculator does this math for all five zones, and switches to the more individual Karvonen method if you also add your resting heart rate.

2. The MAF (Maffetone) method (fast)

Dr. Phil Maffetone's formula is 180 minus your age, adjusted for health and training history. Subtract 5 if you are returning from injury or illness. Add 5 if you have trained consistently for more than two years without setbacks. A healthy, consistent 35-year-old lands at 145 bpm. The MAF number is a ceiling rather than a range, and it usually sits at the top of Zone 2 or slightly above, which makes it a safe cap for easy days.

3. Percentage of lactate threshold heart rate (more precise)

Your first lactate threshold (LT1) is the real upper boundary of Zone 2. If a recent test or a watch with a threshold-detection feature has given you a lactate threshold heart rate (LTHR), Zone 2 generally falls below about 88-90% of it. Anchoring to threshold rather than max HR is more individual, because two runners with the same max HR can have very different thresholds depending on training. For a deeper treatment of why threshold beats max HR for zone setting, see the Zone 2 training guide.

4. A lab or field lactate test (most precise)

The gold standard is a graded lactate test that finds the heart rate where blood lactate first rises above roughly 2.0 mmol/L. That is the genuine top of Zone 2. A sports lab will do it in under an hour, and some physiologists offer field versions with a portable analyzer. If you race seriously or keep drifting into Zone 3 without realizing it, this removes the guesswork entirely.

How to verify your Zone 2 from your own data

Formulas get you a starting number. Your training history tells you whether it is right. Three checks, all from data you already have:

Heart rate drift on long easy runs. On a steady 60-plus minute run held at your estimated Zone 2 ceiling, compare your average heart rate in the first half to the second half. Under 5% drift means your aerobic base is solid and your ceiling is about right. More than 10% drift means you started too hot, which usually means your "Zone 2" number is still too high.

Pace at heart rate over time. Log a few runs at the same heart rate ceiling across a month. If the pace you hold at that heart rate is getting faster, your aerobic engine is adapting and your ceiling is working. If it is flat for many weeks, look at whether your easy days are actually easy or whether intensity is creeping in.

The talk test as a sanity check. At true Zone 2 you can speak a full sentence without gasping. If you can only manage a few words, your heart rate ceiling is set too high no matter what the formula says.

This is exactly where connected data earns its keep. Reviewing every easy session for drift and intensity creep by hand is tedious, and feel-based training hides the creep. When your Garmin, Strava, or WHOOP data flows into one place, the audit happens automatically, and the most common Zone 2 mistake (easy days run 15-30% too hard) gets caught before it stalls your progress. Our Garmin coaching guide covers how that review loop works in practice, and the running zone calculator turns a recent race result into personalized training paces to pair with these heart rate zones.

The mistake almost everyone makes

The single biggest Zone 2 error is trusting the colored zone on a watch that was never told your real numbers. Most devices default to 220-minus-age for max HR, then split the zones from there. If your true max HR is higher than the formula, your watch shows you sitting in "Zone 2" while your body is actually working in Zone 3. You feel productive. You are accumulating fatigue without the aerobic payoff.

Fix it once. Enter a tested max HR and, if you have it, a threshold heart rate into your device. Then use the checks above to confirm. A correctly set Zone 2 ceiling is the difference between an easy run that builds your engine and a moderately hard run that just makes you tired.

The bottom line

Start with 60-70% of your max heart rate, or use the chart above for a quick lookup by age. Refine it with a tested max HR or, better, your lactate threshold. Then let your own data be the referee: low drift, improving pace at the same heart rate, and a passing talk test mean your number is right. Get the ceiling correct and Zone 2 stops feeling like a guess and starts doing what it is supposed to do, which is build the aerobic base everything else is built on.

Zone 2 Heart Rate: How to Find Your Number (With a Chart by Age)