I think you need to find the UCI rule book. I think the category is based on lenght, grade (%) and elevation. I could be wrong but I think you could have a 1300 ft elevation change over 1 mile and it would be a higher catagory than say a 2500 ft change over 4miles. but I sure this is explained in the rules
try here
http://www.uci.ch/templates/UCI/UCI2...?MenuId=MTkzNgadd
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Last edited by Bianchigirll; 12-17-09 at 01:13 PM.
Reason: add link