Climb categories are determined by climb score, which is calculated using the grade multiplied by the length of the climb. A climb must have a length of at least 500 meters and an average grade of at least 3 percent to be considered a climb.

Category	Climb Score	Color
Hors Category (HC)	Greater than 80,000
Category 1	Greater than 64,000
Category 2	Greater than 32,000
Category 3	Greater than 16,000
Category 4	Greater than 8,000
Uncategorized	Greater than 1,500