it depends on your average speed and the type of ground you are walking over. For example on a flat even surface you may achieve about 4mph, in which case 90 miles will take just over 22 hours.
45 hours.
90 minutes
90 hours.
Just under 15 minutes.
90 hours of walking.
It is: 153/90 = 1.7 hours
It would depend on your speed
Depends on the speed
From where?
23.33333 hours
At 60mph it will take an hour and a half.
20 minutes