How many pounds of fat are burned by running at 20 kmh for 30 minutes
A man or womam burns 675.5 calories running at 20 kmh for 30 minutes  Calories Burned Calculator. Using the running calories burned calculator below, you just need to fill some data and get the value of calories burned in Kcal.

How to calculate calories (burned)
The number of calories you burn while exercising is dependent on:
 the exercise you do
 your weight
 the time spent doing the activity
By multiplying the body weight in kg by the MET ^{(*)} value and duration of activity, you can estimate the energy expenditure in Kcal specific to a persons body weight. In this example, running at 20 kmh at a 19.3 MET value, burns 19.3 Kcal/kg x body weight/h.
A 70 kg individual running at 20 kmh for 30 minutes expends the following:
(19.3 METs x 70 kg body weight) x (30 min/60 min) = 675.5 Kcal.
19.3 is the value in METs for running at 20 kmh.
(*) MET  Metabolic equivalent