Climb grade - UCI based, see https://bicycles.stackexchange.com/questions/1210/how-are-the-categories-for-climbs-decided
Categories are sorted in descending order by difficulty ( GradeHC - most difficult, Grade4 - less difficult )
Climb grade - UCI based, see https://bicycles.stackexchange.com/questions/1210/how-are-the-categories-for-climbs-decided
Categories are sorted in descending order by difficulty ( GradeHC - most difficult, Grade4 - less difficult )