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Running calories
Calories burned
725 kcal
How to use it
Enter weight, distance and elevation gain (if it wasn't flat) — get the calorie burn. Pace barely changes the total for aerobic running: calorie cost depends mainly on weight and distance, not speed.
Formula and source
Calories (flat) = weight(kg) × distance(km) × 1.036
Calories (elevation) = weight × 9.81 × gain(m) / 0.2 / 4184
≈1.036 kcal/kg/km — an average across several studies of the metabolic cost of running (Kenney, Wilmore, Costill, 'Physiology of Sport and Exercise'); the climb correction is mechanical work at ≈20% muscle efficiency
Worked example
70 kg, 10 km flat → ≈ 725 kcal. The same distance with 300 m of gain → an extra ≈ 256 kcal from climbing, total ≈ 981 kcal.
Limitations
- The formula ignores descents (they save almost no calories, despite intuition), wind, heat, and surface.
- Individual metabolism varies 10–20% from the average — a heart-rate-based watch estimate is more personal.