 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.
