After blowing a tire, we stay 55-60, and we travel for pleasure and relaxation.
Therefore, allowing for a low stress breakdown and setup, we find 6 hours of driving is an upper end drive time.
No, we're not retired yet, but it is supposed to be relaxing - we just don't go as far.
Yes, we are within sight of retirement, so we also don't have the same energy we did 30 years ago....
This translates into about 300-350 miles per day.
Or, 4, 6, 8 inches on the map depending upon the scale the Mrs. is using