Sagan started the 2014 season at the Tour de San Luis, where he finished second on the final stage. Then he competed at Dubai Tour, where he took second and third place stage finishes; he lost out to Marcel Kittel on both occasions. He finished second at Strade Bianche again, this time he was defeated by Michał Kwiatkowski. The two riders attacked with to go, but Kwiatkowski was stronger on the final climb. At Tirreno–Adriatico Sagan won one stage and the points classification. Sagan finished tenth in Milan–San Remo, despite being considered one of pre-race favorites. Then he went on to win E3 Harelbeke and he finished 3rd in Gent–Wevelgem. Sagan's next attempt to win his first monument was at the Tour of Flanders, but he finished 16th. A week later Sagan competed at Paris–Roubaix, where he finished 6th. Sagan won the penultimate stage of the Tour of California, and also won the sprints classification, for the fifth successive year.