Middle Palisade to Mt. Whitney
A hard trip with three 14ers and one nightmare of a pass. Some substantial class 3 climbing with some serious exposure plus a really shitty pass with wet and loose rock covered with ice. The perfect combination for a memorable outing.
Probably the best continuously long trip you can do in the Sierras. It is though at times and full of challenges but serves everything that backpacking has to offer.