Max elevation: 11587 ft / 3532 m Min elevation: 541 ft / 165 m Elevation change: 11046 ft / 3367 m
Max grade: 4.9% Min grade: -5.7% Steepness score: 57 + 574 + 2360 + 65 = 3056
Distance: 2016.01 mi / 3244.46 km Travel Time: 28 hours 50 mins
It looks like one possible route that might be flatter would be to go through Mobile, but make sure you double check everything if you're planning a road trip.
Elevation data comes from different sources and may not reflect true
driving conditions, so talk to other RVers if you're concerned about
steep grades. If you're planning to drive in the winter and you want to avoid snow, check the road conditions from Detroit to Las Vegas. You can also view a 3-D map of Detroit elevation or Las Vegas elevation.
These are some of the possible highways along this route. Use the GPS in your car to verify all driving directions. If you're looking for campgrounds along the way, search for RV parks between Detroit and Las Vegas.