http://www.daftlogic.com/sandbox-google-maps-find-altitude.htm

To find the grade of a road:
use this site to determine the start and end elevations (use the meter scale result); use google maps to find the distance. Convert the miles into meters (enter the distance and "to meters" in a google search). The Equation is (rise ÷ run) * 100 Rise is the difference between the two elevations and run is the distance. For example if you rise 122 meters over 1.5 miles (2,414 meters), the equation would be (122÷2414)*100 This would give you a grade of 5.5. Thanks to Michael from Rochester, NY for the prompt to research this (he must have known the math would be easy, even for me)!



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