 The third classification was the mountains classification . Most stages of the race included one or more categorised climbs . Stages were categorised as third- , second- , first- and special @-@ category , with the more difficult climbs rated higher . The most difficult climb of the race , the Alto Ermita de Alba on Stage 16 , was given its own category as the Cima Alberto Fernández . Points were awarded for the first riders across the summit of each climb ; the rider with the most accumulated points won the classification and wore a white jersey with blue polka dots . 
