The Most Efficient Way to Burn Calories
Running is one of the most effective calorie-burning activities available. A 70kg person burns roughly 600-700 calories per hour running at a moderate pace (6 mph / 10 min per mile). Crank it up to a 5-minute mile pace and you can push past 900 calories per hour.
The running calorie calculator uses a formula that accounts for distance covered (which is the most accurate measure) and your body weight. A 90kg person burns significantly more calories running the same distance as a 55kg person — about 60% more.
Running vs Walking
Here's a counterintuitive fact: running and walking can burn similar calories per mile, but running burns them much faster. Both roughly equal 100 calories per mile for a 70kg person. But if you run that mile in 8 minutes versus walking it in 16 minutes, you've burned the same calories in half the time.
This doesn't mean running is always better. Running is higher impact, higher injury risk, and harder to recover from. For larger people or those with joint issues, brisk walking can be more sustainable and actually burn more total calories because you can do it for longer.
What About "Afterburn"?
EPOC (Excess Post-Exercise Oxygen Consumption) is the phenomenon where your body continues burning elevated calories after exercise. High-intensity exercise like running produces more EPOC than low-intensity exercise like walking. However, the effect is often overstated — EPOC from a typical run adds maybe 5-10% to the calories burned during the run itself. It's not a game-changer, though every bit helps.
The Honest Numbers
A 5K (3.1 miles) run burns roughly 300-400 calories for a 70kg person. A 10K burns 600-800. These are estimates — your actual burn depends on terrain, weather, fitness level, and efficiency. Use our running calorie calculator for a personalized estimate based on your weight and distance.