How many calories does running burn per mile?

Roughly 1 kcal per kilogram of bodyweight per kilometre, net of resting metabolism. For a 180 lb athlete that is about 130 kcal per mile, so a six-mile run costs about 780 kcal. Heavier runners burn more for the same distance because they are moving more mass.

Does running faster burn more calories?

For the same distance, barely. You finish sooner at a higher rate and the product is close to constant, so a hard ten-miler and an easy ten-miler cost about the same. For the same duration, faster burns considerably more because you cover more ground.

Is cycling or running better for burning calories?

Running is more energy-expensive per unit of time at comparable perceived effort, because you support and decelerate your bodyweight with every stride. Cycling is dominated by air resistance, so its cost scales with power output and duration rather than with distance.

Are watch calorie estimates accurate for running?

Reasonable as a trend, unreliable as a number. They rest on assumptions about your running economy that are not measured and are not yours, and a several-hundred-calorie error is larger than most bulking surpluses. Use them directionally and steer by the scale.

How Many Calories Does Running Actually Burn?

Q: Do I burn calories after a run?

Some, through excess post-exercise oxygen consumption, and much less than popular claims suggest. For steady endurance work it is a small percentage of the session cost — worth knowing about and not worth budgeting for.

The formula, and why it has the terms it has

kcal ≈ bodyweightKg × distanceKm × 0.95    (net of resting)

Bodyweight is in there because running is a whole-body vertical oscillation. Every stride lifts and lowers your mass and decelerates it on landing. More mass, more work.

Distance is in there because the work done is per stride, and strides scale with distance.

Pace is not because the cost per unit distance is approximately constant across a wide range of speeds. You do more work per minute going faster and you spend fewer minutes.

That constancy breaks at the extremes — very slow running becomes mechanically inefficient, and sprinting has a different energy system profile — but across the range where training actually happens it holds well enough to plan with.

What it means in practice

Session	Distance	155 lb (70 kg)	180 lb (82 kg)	205 lb (93 kg)
Easy 40 min	5 mi	535	625	710
Tempo 45 min	6 mi	640	750	850
Long run	12 mi	1,285	1,505	1,705
Half marathon	13.1 mi	1,400	1,640	1,860
Marathon	26.2 mi	2,800	3,285	3,720

Two readings worth taking from that table.

"I only did an easy run" is not the reassurance people think it is. An easy ten-miler costs the same as a hard one, and if your maintenance figure did not include it, the surplus you thought you were running is gone either way.

Weight matters more than most people expect. A 205 lb hybrid athlete burns 30% more than a 155 lb runner over the same distance, which is why generic per-mile figures published without a bodyweight term are close to useless.

Weekly totals, which is where it bites

Weekly mileage	155 lb	180 lb	205 lb
15 mi	260 kcal/day	305	345
25 mi	430	505	570
40 mi	690	805	915
55 mi	950	1,105	1,255

Now compare against the number that decides whether you gain muscle. A trained lifter's usable surplus is about 179 kcal a day — a pound of lean tissue costs roughly 2,500 kcal and 0.5 lb a week is 179 a day.

Every column in that table exceeds the surplus at every mileage. That is the entire hybrid energy problem in one comparison: the training cost is not a modifier on your calorie target, it is larger than the thing you were trying to control.

Cycling is a different problem

Cycling energy cost is dominated by air resistance, which scales with the cube of velocity. So distance is a poor predictor and pace is a very strong one — the opposite of running.

The usable approaches:

With a power meter: kilojoules of work done is approximately kilocalories expended, because human gross efficiency on a bike happens to be close to 25% and the unit conversion cancels. This is the most accurate field measure of energy cost available in any endurance sport.
Without one: roughly 7 METs for a mixed endurance ride, which is a much cruder estimate than the running formula.

This asymmetry is worth knowing: a cyclist with power has better expenditure data than a runner will ever have, and a cyclist without power has worse.

Why watch estimates are unreliable

Wrist-based active energy estimates rest on assumptions about your running economy, your heart rate response and your body composition. None of those is measured and none of them is yours specifically.

Trained runners are more economical — the same ten miles costs a trained runner meaningfully less than an untrained one at the same bodyweight. Devices do not know your economy, so they apply a population average, and your error is systematic rather than random.

The practical consequence: use watch calories as a trend, not as a number. A 300-calorie error is well inside normal and it is larger than most people's entire surplus or deficit.

The measurement that has none of these problems

Stop estimating expenditure. Observe the outcome.

weightChangeLb = trendWeight(today) - trendWeight(14 days ago)
energyBalance  = weightChangeLb * 3500 / 14
maintenance    = avgDailyIntake - energyBalance

That figure contains the running whether or not your watch estimated it correctly, whether or not you know your economy, and whether or not you logged the session. It also contains your non-exercise movement, which is the largest uncontrolled term in any prediction and which no formula on this page can reach. The full method.

EPOC, briefly

Excess post-exercise oxygen consumption — the elevated metabolic rate after a session — is real and much smaller than popular claims suggest.

For steady endurance work it is a small percentage of the session's cost. For high-intensity interval work it is proportionally larger and still small in absolute terms. It is worth knowing about and it is not worth budgeting for, and any calculator that adds a large "afterburn" figure is over-selling it.

What to do next

Take your weekly mileage, multiply by your bodyweight in kilograms and by 1.6 to convert miles to kilometres, and divide by seven. Compare that daily figure against the surplus or deficit you thought you were running. For most hybrid athletes the first number is larger than the second, and that comparison explains more than any programme change would.