Elevation from Salinas to Santa Maria (California) via
Max elevation: 1677 ft / 511 m Min elevation: 46 ft / 14 m Elevation change: 1631 ft / 497 m
Max grade: 9.1% Min grade: -15.3% Steepness score: 8 + 1529 + 5276 + 5 = 6819
Distance: 158.48 mi / 255.05 km Travel Time: 2 hours 24 mins
It looks like one possible route that might be flatter would be to go through Avila Beach, 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