Majka was a last-minute inclusion in 's 2014 Tour de France squad, after Roman Kreuziger was temporarily suspended from racing due to irregular biological passport values. On Stage 14, he earned his first professional victory after going solo on the final climb to Risoul. Four days later he claimed another victory on Stage 17, soloing to the mountaintop finish atop Pla d'Adet. These successes, as well as some other strong performances in mountain stages, earned Majka the polka dot jersey as winner of the mountains classification, becoming the first Polish rider to win a jersey in the Tour de France. A couple of weeks after the Tour de France he won stages five and six of the 2014 Tour de Pologne as well as the general classification. Majka was the first Polish rider to win the Tour de Pologne since it became part of the UCI World Tour.
