How Many Calories Do You Burn Running a Mile? (The 100-Calorie Rule)

Here is the finding that surprises almost every runner: how fast you run barely changes how many calories one mile costs you. A 2012 study in Medicine & Science in Sports & Exercise confirmed what exercise physiologists had long suspected — running a mile at a 12-minute pace burns nearly the same total energy as running it at a 6-minute pace, because the faster run works harder but lasts half as long. That is why the classic rule of thumb works: a 150 lb person burns about 100–105 calories per mile, and the number scales with body weight, not speed. In this guide you will get the exact per-mile chart by weight, per-minute burn by pace, race-distance totals, and the honest net-vs-gross number — or skip straight to your personal burn with our running calories calculator.

The 100-calorie rule: per-mile burn by weight

The most useful rule in running nutrition: you burn roughly 0.7 calories per pound of body weight per mile (about 1.55 per kg per mile). A 150 lb runner: 150 × 0.7 = 105 calories per mile. That one formula replaces every complicated chart — just multiply your weight by 0.7.

Spot check: 120 × 0.7 = 84 ✓; 200 × 0.7 = 140 ✓; and 5K totals are just per-mile × 3.1 (e.g. 112 × 3.1 = 347 ✓). The relationship is linear — double the distance, double the burn, regardless of pace.

Why pace barely matters (per mile)

It feels wrong: sprinting a mile must burn more than jogging it. And per minute, it does — a 6-minute mile burns about 17.5 cal/min for a 150 lb runner versus ~8.75 cal/min at a 12-minute pace. But the fast mile takes 6 minutes and the slow one takes 12: 17.5 × 6 = 105 and 8.75 × 12 = 105. The two effects cancel almost exactly.

In practice there is a small wrinkle: very fast running is slightly less efficient (more bouncing, more wind resistance), so a hard mile may cost 5–10% more than an easy one — but for calorie planning, the difference is noise. What pace changes is how many miles you cover in your available time, and therefore your total burn per session. Thirty minutes at a 10-minute pace = 3 miles ≈ 315 calories; thirty minutes at a 7:30 pace = 4 miles ≈ 420 calories.

Per-minute burn by pace (for treadmill planning)

If you plan workouts by time rather than distance, divide your per-mile number by your minutes per mile:

Math: per-minute = (0.7 × weight) ÷ pace. For 180 lb at 8:00 pace: 126 ÷ 8 = 15.75 ≈ 15.8 ✓. Notice the last column: a fast 200 lb runner burns in 6 minutes what a slow 150 lb runner burns in 12 — weight and time, not speed, are the levers.

Race distances: the full totals (150 lb runner)

A marathon burns roughly 2,600–3,100 calories for most adult runners — which is why marathon training plans add serious fuel and why "running a marathon to lose weight" usually backfires through appetite (more on that below). For shorter races, the numbers are refreshingly manageable: a 5K is one solid snack.

Net vs gross calories: the honest number

The figures above are gross — they include the calories you would have burned sitting on the couch during those minutes. For weight-loss math, what matters is the net burn: extra calories above resting. Resting metabolism is roughly 1–1.2 cal per kg per hour, so a 10-minute mile for a 150 lb (68 kg) runner includes about 11–14 resting calories. Net = ~105 − ~12 ≈ ~93 extra calories per mile — roughly 10–12% less than the gross number. Most trackers and charts (including this one) report gross; just know your true deficit is a touch smaller.

Treadmill vs outdoor: does it matter?

Barely. The oft-cited difference — air resistance outdoors — costs only a few percent, and setting a treadmill to a 1% incline is the standard way to equalize it. Hills are the real lever: running uphill raises the cost substantially (a 5% grade roughly doubles per-minute burn versus flat), while downhills give most of it back. Wind and heat matter more than the treadmill/outdoor split: heat raises heart rate and perceived effort without adding much burn, and dehydration makes everything feel harder.

Why runners often do not lose weight

The math says a 150 lb runner doing 15 miles a week burns ~1,575 extra calories — nearly half a pound of fat. Yet studies repeatedly show new runners losing less than the math predicts, for three reasons: (1) appetite rises and "I earned it" eating outruns the burn; (2) non-exercise activity drops — you sit more the rest of the day; (3) beginners run less efficiently at first (slightly higher burn) but also shorter distances. The fix is the same as always: set your food target from your total daily burn with our TDEE calculator, log the runs as a bonus, and do not eat back the full estimate.

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Written by the Live Fitness Check editorial team · Reviewed against our calculator methodology · Last updated October 2026

Disclaimer: This guide is for educational purposes only and is not medical advice. If you are new to running, have a heart condition, or carry an injury, check with your doctor before starting a running program.