Running Calories Calculator
Calculate exact calories burned running based on body mass and distance
~74.6 kcal burned per kilometer (~120 kcal/mile)
Mathematical Formula & Scientific Methodology
Formula: Gross Locomotor Running Energy Cost (Margaria et al.)
Calories = Body Weight (kg) × Distance (km) × 1.036 kcal/kg/kmIn running, caloric expenditure is predominantly distance-dependent rather than speed-dependent, because moving mass forward requires a fixed mechanical energy per unit distance.
Model Assumptions
- Flat terrain surface
Variables & Standard Units
| Symbol | Physiological Meaning | Unit |
|---|---|---|
| 1.036 | Margaria biological constant representing the gross metabolic cost of horizontal running | dimensionless |
Scientific Limitations
- Steep incline running significantly increases the energy cost per kilometer
Peer-Reviewed Scientific Citations
2011 Compendium of Physical Activities: a second update of codes and MET intensities (2011)
Ainsworth BE, Haskell WL, Herrmann SD, et al. (2011) — Medicine & Science in Sports & Exercise, 43(8), 1575-1581
Key Finding: Defines Metabolic Equivalent of Task (1 MET = 3.5 ml O2/kg/min or 1 kcal/kg/hour) across hundreds of standardized physical activities.
Frequently Asked Questions
Related Calculators & Next Steps
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