Typically, a person must take 26,471 steps to burn 1,000 calories. On average, a total of 2,250 steps is equivalent to 1 mile. A 160-pound person walking at a pace of 3 miles per hour burns 85 calories per mile and 255 per hour.

A person's weight, walking speed and length of stride impact how many calories are burned while walking a mile. There are 3,500 calories in a pound. Burning 1,000 calories equates to .29 of a pound lost.

A person can burn more calories by walking at speeds less than 2.5 miles per hour. At very slow speeds, the body is stopping and starting and, therefore, is not being carried forward by momentum.