Running a mile burns roughly 100 calories for an average-sized person, but the actual number ranges from about 80 to over 250 depending on your body weight, pace, and terrain. That “100 calories per mile” rule of thumb is a decent starting point for someone weighing around 150 pounds at a moderate pace, but it can be significantly off if you’re lighter, heavier, or running fast.
Calorie Burn by Body Weight
Your body weight is the single biggest factor in how many calories you burn running a mile. A heavier body requires more energy to move the same distance. At a comfortable 10-minute mile pace, here’s what the numbers look like:
- 120 pounds: about 93 calories per mile
- 150 pounds: about 117 calories per mile
- 180 pounds: about 140 calories per mile
- 210 pounds: about 164 calories per mile
Gender also plays a role, largely because of differences in body composition. A regression equation developed from exercise research found that body mass and gender were the two strongest predictors of energy expenditure per mile, together accounting for about 80% of the variation between individuals. Men tend to burn slightly more per mile than women of the same weight, primarily because they carry more muscle mass, which is metabolically expensive tissue to move.
How Pace Changes the Numbers
Here’s where things get counterintuitive. At slower and moderate speeds, running a mile burns roughly the same number of calories regardless of pace. A 150-pound person jogging a 12-minute mile burns about 119 calories, while running a 9-minute mile burns about 113. The per-mile cost is surprisingly stable across a wide range of everyday running speeds.
That changes once you push into genuinely fast territory. At 8 mph (a 7.5-minute mile), that same 150-pound person burns around 166 calories per mile. At 10 mph (a 6-minute mile), it jumps to 178. At a full sprint pace of 12 mph, it reaches 186. The reason is biomechanical: at high speeds, your stride mechanics shift. You spend more time airborne, your muscles contract more forcefully, and you recruit more muscle fibers with each step. All of that costs extra energy.
The metabolic intensity of running follows the same pattern. Exercise scientists assign each activity a MET value, essentially a multiplier of your resting metabolism. Running at 5 mph has a MET value of 8.5, meaning you’re burning 8.5 times more energy than sitting still. At 6 mph, it’s 9.3. At 8 mph, it’s 12.0. And at 10 mph, it jumps to 14.8. Those higher MET values at faster speeds are what drive the increased per-mile calorie cost.
Running vs. Walking the Same Mile
A common question is whether you burn the same calories walking a mile as running it. The short answer: running burns more, but not as much more as you might expect. Research comparing normal-weight walkers and runners over a single mile found that walkers burned about 94 calories while runners burned about 99. That’s surprisingly close. The key difference is that running gets you there faster, so your calorie burn per minute is much higher. If your goal is pure calorie expenditure and you have unlimited time, walking more miles can compensate. But if you’re pressed for time, running is far more efficient.
One important nuance: when researchers adjusted for body composition rather than just total weight, the energy cost per mile was nearly identical across groups. What this means practically is that the calorie gap between walking and running a mile narrows when you compare people of similar lean body mass.
The Afterburn Effect
Your calorie burn doesn’t stop the moment you finish your mile. After any vigorous exercise, your body continues consuming extra oxygen to restore itself to its resting state. This recovery process burns additional calories for minutes to hours after you stop running. According to Cleveland Clinic, this afterburn adds roughly 6% to 15% on top of the calories you burned during the run itself.
For a 150-pound runner who burned 117 calories during a mile, that’s an extra 7 to 18 calories afterward. Not life-changing for a single mile, but it adds up over longer runs and harder efforts. The effect scales with intensity: an easy jog produces a minimal afterburn, while hill repeats or tempo runs push it toward the higher end of that range.
Hills, Terrain, and Temperature
Running uphill increases your calorie burn substantially. Every degree of incline forces your muscles to work harder against gravity. A widely cited finding from the 1990s established that setting a treadmill to a 1% grade roughly mimics the energy cost of running outdoors on flat ground, since treadmill running eliminates air resistance. So if you’re running on a treadmill at 0% incline, you’re actually burning slightly fewer calories than you would outside.
Trail running and soft surfaces like sand or grass also increase energy expenditure because your foot sinks slightly with each step, absorbing energy that would otherwise propel you forward on pavement. The exact increase depends on how soft the surface is, but expect to burn 5% to 15% more on trails compared to a paved road.
Temperature matters too, though the effect is more complex than most people assume. Research on hikers found that exercising in cold conditions (15 to 23 degrees Fahrenheit) burned 34% more calories than the same activity in mild weather. Your body spends significant energy generating heat through a process called thermogenesis. However, there’s a trade-off: the movement of running itself generates heat, which partially offsets the cold-weather calorie bonus. You’d actually maximize cold-weather calorie burn by moving slowly, since your muscles would produce less heat and your metabolism would have to pick up more of the warming burden.
Running Economy and Fitness Level
Two runners of the same weight running the same pace won’t necessarily burn the same number of calories. The difference comes down to running economy, which is how efficiently your body uses oxygen at a given speed. A more economical runner wastes less energy on unnecessary movement, like excessive vertical bounce or side-to-side sway.
Interestingly, research from Rutgers found that among recreational distance runners, better running economy was associated with lower overall aerobic fitness. This suggests that runners with less natural cardiovascular capacity may develop more efficient movement patterns as a compensatory adaptation. In practical terms, this means a newer runner might burn slightly more calories per mile than an experienced runner of the same weight, because their form is less refined and their body works harder to cover the same ground. As your running form improves over months and years, you become more efficient, and your per-mile calorie burn drops slightly.
A Quick Way to Estimate Your Burn
If you want a personalized estimate without a calculator, use this simple approach: multiply your weight in pounds by 0.75. That gives you a reasonable estimate of calories burned per mile at a moderate pace. A 160-pound runner would get 120 calories per mile, which lines up well with the detailed charts. For faster running (under 8 minutes per mile), multiply by 1.0 to 1.2 instead. For a slow jog or run-walk, multiply by 0.6 to 0.7.
These are estimates, not precise measurements. Heart rate monitors and GPS watches that factor in your weight, age, and heart rate will get closer to your true number, but even those can be off by 10% to 20%. The most reliable method is to track your weight and calorie intake over weeks and work backward from the trends.