That depends on your speed and the number of stops you make. However, if you average 55 miles per hour for the entire distance your driving time would be about 7 hours and 15 minutes.
8 hours
6 hours 40 minutes at 60 mph
about 400 miles
A little more than 5.
10 hours
about 3-400 miles
(400 miles/trip) x (1 hour / 70 miles) = (400/70) (miles-hour / trip-miles) = 5.7143 hours = 5 hours 43 minutes, with no stops.
Five hours.
It's about 400 miles. The drive takes between 7-10 hours, depending on your speed and how many stops you make.
5.71428571429 hours
5 hours 33 minutes.
Dividing distance travelled by speed gives 400/70 = 5.714285 recurring (that is, 5.714285714285..) hours or 342 minutes 51 seconds, rounded to the nearest second.