Please rephrase the question. Do you mean: "how much distance will you cover at 7mph in 30 minutes?"
17 min 9 seconds
6.923 mph
If you run 3.5 mph how long does it take you to run 67 feet? 4.0 miles per hour and all speeds, in 0.5 mph increments up to 8.5 miles per hour?
15 mph
22.5 seconds.
Set the speed at 7 mph
It is impossible to run that fast, but if it were, it would take 2 hours.
6.92 mph
8mph
11.32 minutes
10 minutes.
Three minutes.