Most people run a mile at an average of 8 and a half minutes, but this varies depending on the physical shape of the person. So, if you could run a mile in m minutes, and the …time you could run 5 miles was x, you would just take the proportion: 1 mile = 5 miles m x Let's assume m is 8.5 min. 1 mile = 5 miles 8.5 min.