We would like to plan a trip from Pennsylvania to Arizona with many stops along the way. Not sure witch routes are best. Any opinions would be helpful. Thanks...
I agree with the consensus here - three weeks is way too short to cover both the southern areas (e.g. the I-40 or I-10 corridor) and the stuff up north like Rushmore and Yellowstone. I'd do them in two separate trips. If you've never driven a lot out west, it can be WAAAAAAY different, distance-wise, from here in the east. Rushmore is a long hike from the Grand Canyon, no matter how you do it.. :)