as our old RV (and us) don't like crossing mountains... what is the lowest altitude going from the west coast to the east coast across the mountains. i was told that I10 is flat but elpaso is 4000 f...
We have DeLorme's topical map program on our computers. We can not only figure a "path", but we can see where the highest mountains are and figure out what the rate of ascent is. I highly recommend it. We, too, have to take the mountains into consideration when traveling.