Elevation from Madison (Wisconsin) to Wisconsin Dells via
Max elevation: 1127 ft / 343 m Min elevation: 782 ft / 238 m Elevation change: 344 ft / 105 m
Max grade: 16.7% Min grade: -16.3% Steepness score: 16 + 1673 + 8588 + 2 = 10278
Distance: 56.32 mi / 90.64 km Travel Time: 1 hours 4 mins
It looks like one possible route that might be flatter would be to go through Laurel (Montana), 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