In 2009, Martin won time-trials in the Critérium International and the Bayern-Rundfahrt. He also featured strongly in week-long stage races, winning the mountain classifications at Paris-Nice and the Tour de Suisse, finishing second overall and winning a stage in the latter. Martin also made an impact at the Tour de France, wearing the white jersey as leader of the young rider classification on stages 3 to 14, and winning the combativity award after finishing second on Stage 20 at the top of Mont Ventoux. He took the bronze medal in the time trial at the UCI Road World Championships at the end of the season.