Running Calorie Calculator

How running calories are calculated

Running energy cost is driven overwhelmingly by bodyweight and distance — pace matters less than most runners assume.

The calculator uses MET values from the Compendium of Physical Activities:

The 1 kcal per kg per km rule

A well-known approximation: running burns roughly 1 kcal per kg of bodyweight per kilometre. A 70 kg runner burns about 70 kcal per km, so a 5K is around 350 kcal and a marathon roughly 2,950 kcal — regardless of whether that 5K takes 20 or 35 minutes.

Speed changes how quickly you burn the calories, not the total for a fixed distance. This is why distance, not pace, is the primary lever for energy expenditure.

Running versus walking the same distance

Running burns roughly 1.5–2× more than walking the same distance, because of the airborne phase and higher muscular demand. But total weekly volume and consistency matter more than per-session intensity for fat loss.

Trakon's running tracker records distance, pace, splits, route and elevation via GPS, and estimates calories from your logged bodyweight automatically.

Frequently asked questions