Despite the 229km stage being the third consecutive day in the mountains, Deignan made sure he was part of the 18-rider attack and tried to stay with eventual stage winner Mikel Nieve (Euskaltel-Euskadi) for as long as possible.
He eventually faded and was caught by Alberto Contador and the other overall contenders but finished an impressive 14th, only 6:40 behind Nieve.
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