Directions: 1) Click green flag. 2) Enter number of feet per lap. 3) Press G to start clock. 4) Press space bar at the completion of each lap. 5) Press S to stop clock.
Carefully measure the length of a lap. If you are going to walk back and forth up and down a hallway which is forty feet long, a lap will be 80 feet in which case it'll take 66 laps to make a mile.
