The time it takes to drive 20 miles depends on the speed at which you are driving. If you are driving at a constant speed of 40 miles per hour, it would take you 0.5 hours to drive 20 miles (20 miles / 40 miles per hour = 0.5 hours). If you are driving at a constant speed of 60 miles per hour, it would take you 0.33 hours to drive 20 miles (20 miles / 60 miles per hour = 0.33 hours).
About 20 hours.
20 hours at 60 mph
60 miles.
Probably 15-20 hours nonstop
9 hours 20 minutes.
28 hours and 20 minutes.
10 hours 20 minutes at 60 mph
40 hours 20 minutes at 60 mph
49 hours, 20 minutes
At an average 60 mph: 28 hours, 20 minutes
20 minutes at 60 mph
20 hours and 6 minutes