For our family, the amount of miles we travel in a day is determined by how much we want to see along the way. Some days, we only do 200 miles of driving and lots of exploring, but we've done as much as 600 miles when we were ready to trek home quickly.
We went from Missouri to California last summer (taking I-40, the general route for Route 66) and stopped at the Grand Canyon. I have a blog page linking to what we explored in each state:
Birdy Goes WestWe didn't make it up to Utah, but we loved exploring Arizona and NM.
