It's probably not as steep as you think it is.
Hills appear steeper than they actually are.
For example, everyone judges hills with only a seven-degree slant as extremely steep. The tendency to overestimate steepness is even greater for elderly people, people carrying a heavy load and people who are tired, of low fitness or in poor health. These are findings of University of Virginia research probing how people perceive and think about space. In a series of experiments on perceptual bias led by psychology professor Dennis R. Proffitt, participants consistently judged a hill with a 10-degree slant to be about 30 degrees. Their guesses for a five-degree hill averaged 20 degrees.