which burns more calorie?

Dominic, doctors tell us that walkers and runners the same size who cover the same distance burn almost exactly the same number of calories, whether they go fast or slow.

Of course the faster runner is more fit and increases cardiovascular fitness with every run, but for sheer calories burned, it's probably a draw.

person 1 burns more calories.

Assuming they weigh the same, they will burn close to the same number of calories. 

The efficiency of running changes little with speed. If a runner burns K calories / mile at one pace, the runner will burn close to K calories / mile at another pace.  

However, walking is more efficient than running. So, walking a distance will burn fewer calories than running the same distance.

If they do not weigh the same, the difference in caloric consumption will be in proportion to their difference in mass. For example, a 180 pound runner will need twice as many calories per mile as a 90 pound runner.

It depends on their body weight as a heavier person will burn more than a slim person over the same distance. A normal workload calculation will prove this

individual 1: run in a high speed for 20km.

individual 2: run for 20km.

Obviously that individual 1 will complete the 20km quicker.

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