Oakleaf, if you go there to map a ride and click at least two navigation points on the map look to the bottom of the screen where it says elevation and click on it and this colored bar graph comes up. You can choose to view the elevation data or not to view it. Sorry that the shot came out fuzzy and I'm not sure how to make it bigger but the upper end of the scale says 19% so by your criteria that would make it pretty steep. I don't have the premium membership, only the free one.

I found out about the elevation feature here on TE I never knew it existed either.