 Costa repeated his feat of three stages previous by taking victory in stage nineteen , by attacking on the final climb of Col de la Croix Fry and soloing to the finish in Le Grand @-@ <unk> . There were no major changes at the head of general classification . Stage twenty , the penultimate stage , saw the leaders of the general classification still together at the head of the race with 8 km ( 5 mi ) remaining of the final climb of Mont <unk> . Quintana and Rodríguez then attacked , with Froome the only rider able to bridge , and again the pair pulling away , with Quintana managing to hold off Rodríguez by eighteen seconds to take the stage win , with Froome a further eleven down . Contador came in seventh , two minutes and twenty @-@ eight in arrears , dropping to fourth overall , with Rodríguez moving up to third . With the double points gained with his win Quintana secured the mountains classification . 
