Originally Posted by krazyderek
Looks like their only as accurate as google maps was in your city. For instance, look at this, it's a 400meter (quarter mile?) length hill that has a steady 10% grade for the entire thing.
http://routeslip.com/elevationgraph.php?map=6222
Not exactly as smooth as real life.
Interesting...looks like there must be falloff on the graph between known elevations points.