How Many Pennies Does It Take To Make One Mile?

That depends on whether you're laying them side by side or stacking them one atop the other.  I did some measurements and calculations of my own and  lying side by side, it would take 84,480 pennies to reach one mile.  Stacked flat one atop the other it would take 1,108,800 pennies to reach one mile. 

A penny's diameter is .75 inches and a mile is 5,280 feet, which converts to 63360 inches, and I divided that by .75 inches and therefore, it takes  84,480 pennies to make a mile!