970 miles
It would take approximately 11 hours to drive from Houston to Amarillo. Give or take a few depending on how fast you drive.
About 15.5 hours.
It will take about twelve hours fifty minutes to drive the 716 miles.
Google Maps estimates the driving time as 8 hours and 43 minutes.
About 4 hours and 41 minutes
Google Maps estimates the driving time as11 hours and 45 minutes.
1005miles 15 hours
There is approximately 705 miles between Phoenix, Arizona and Amarillo, Texas. It would take about 10 and a half hours to drive by car.
It is 924.80 miles according to MappQuest.
That drive can be made in an estimated 12 hours and 43 minutes via Wichita Falls, Amarillo, Dalhart, and Trinidad on US Highway 287 and then heading heading North on Interstate Highway 25. The distance is 726 miles and Amarillo is an excellent halfway point if you aren't in a hurry.
21 hours
It is 364 miles according to Google Maps.