It would take Wilma 8 hours to run 40 miles at 5mph.
It depends on how fast you can run and for how long you can sustain that speed.
It is impossible to run that fast, but if it were, it would take 2 hours.
It would take 10 minutes.
Just over 8.5 minutes.
0.73 hours = approx 44 minutes.
37 minutes 12 seconds.
31 minutes 34.73 seconds.
That depends on how long you run for.
20 minutes. But you would be walking unless you were very small.
It would take 1 hour 14 minutes 30 seconds.
About 43 minutes.