That depends on your speed and the number of stops you make. However, if you average 60 miles per hour for the entire distance your driving time would be about 7 hours and 30 minutes.
450 miles.
450 miles
450/55=8.181818181818182 hours.
3 hrs.
450 / 70 = 6.429 hours (rounded)
450 / 75 = 6 hours.
6.5 hours
450 road miles and about 7 hours.
3 hours
5 hours
about 450 miles
Six hours.