Just divide the distance by the speed.
The Keys are 120 miles long. Dallas to Key West is 1470 miles.
If you were driving 65 miles per hour how long will it take you to drive 310 miles?
It depends on how fast you drive. However, as an example, to cover 1,470 miles would require at least 22 hours and 36 minutes of driving time if you maintained a steady 65 mph. You will have to add time for stops, detours and other delays.
That depends on the speed of your driving.
Depends on how fast you drive.
4 hours 11 minutes to drive 271 miles driving at 65 MPH.
That will depend on how fast you are driving.
That will depend on the speed you are driving at.
It depends on the speed you are driving.
It depends how fast you are driving.
It depends on the speed you are driving.
Depends how fast you are driving.