there is also a mountains classification, for which points were awarded for reaching the top of a climb before other riders. each climb was categorised as either first, second, third or fourth-category, with more points available for the more difficult, higher-categorised climbs. for first-category climbs, the top eight riders earned points; on second-category climbs, six riders won points; on third-category climbs, only the top four riders earned points with three on fourth-category climbs. the leadership of the mountains classification was marked by a blue jersey. the "cima coppi", the race's highest point of elevation, awards more points than the other first-category climbs, with nine riders scoring points. initially, the cima coppi was scheduled to be the passo di gavia on the sixteenth stage, but due to weather the climb was removed from the itinerary. the next highest climb was that to serrù lake, however the climb had already been ascended prior to the cancellation. as a result, organisers chose to assign the cima coppi to the highest climb out of those which had not been ascended - the passo manghen on stage 20.