Re: Measuring Hill Gradients Mathematically

Joe Cipale

2007-03-11

The %grade of a hill will always be rise over run (i.e feet of climb/100
foot horizontal). What I think you are referring to (and for that
matter, what the orignal poster was looking for) was how are the cols
rated in Europe. To (poorly) mimic Phill Liggett, it has to do with the
rate of ascent (%grade), the distance (how long the climb is) and the
elevation (the height of the summit).

A more complete definition I am almost certain can be found at the UCI
or the USACylcing website(s).

Joe
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