It would have been a perfect stage design if the Alto del Camino and Puerto del Boyar were 20 kilometers closer to the same finish. It would have given a bigger chance to a breakaway, which would consequently speed up the pace in the peloton keeping an interesting mix of riders for the finale... with the breakaway still ahead, don't forget.
This way, with almost 50 kilometers from the top of Boyar to the end, it's hard to imagine a breakaway surviving and anything else but disentanglement in the last couple of kilometers.