Originally Posted by
CoogansBluff
From the same point in the road but looking both ways, here's a glimpse of the hill that hits 16 degrees. I can only imagine what 20+ degrees looks and feels like.
FYI, grades are expressed in percentage, not degrees. It's "rise over run". The amount of gain compared (roughly) to the distance traveled.
In other words, a 45 degree angle would be (roughly) a 100% grade.