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General Climbing Discussion

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% improvement required to reach next grade 3-Nov-2016 At 1:22:21 PM Andrew_M

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There was a Rock article or something from the guys at thecrag.com some years ago where they looked at a whole lot of the stats they could harvest out of users' data. One thing they tried to quantify what the actual difference in difficulty between grades.

Basically, from memory, they worked out how many people could climb each grade and made the assumption that if a certain number of people could climb grade x then the grade where there were half as many people could climb must be about twice as hard. I think it worked out pretty well that every 2 grades meant a halving in the number of folks who could climb it. That would mean that each grade is about 40% harder than the one before.

Maybe someone else can remember better than me...