a speed run is technically Speed work refers to a type of running workout in which you are running for certain intervals near, at, or even faster than your VO2max pace.
the answer would be E because if you round answer E to 3mph and divide by 2 you get 1.5 and a hour is 60 minutes divide that by 2 and you get 30 minutes however you walked slightly slower so it would take 5 minutes longer.
