D&B = Down and Back = 2 lengths. Each length is 42'. Total D&B length is 84'. Do not run anything other than 4 down and back shuttle runs, which is 8 lengths of the running route, 4 in each direction, 42' each way.

Do not run in circles (if it was allowed the function to calculate the radius from a circumference of 84' is r=c/2*3.14, which to save you time is 13'5"). Once again it is not allowed.

4 runs each round. Each Down and Back (with a floor touch at each end). Running in place is not an option. Should it appear you might collide with another WOD participant kindly dodge to the right in a swift manner. If your run takes you out of the box you have gone to far, something is very wrong.