The mapping software I got last year with my Trailer life directory includes grades. If you go to tools and set the % of grade you want it to high lite. It will put it on the trip map you asked it to calculate on your computer.
The mapping software is not that good. You have to be careful. It will take you over 4X4 roads if you are not careful. I have not figured out a method so it will not take you over 4X4 roads.
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