On August 16, 2017, Tina Lewis ascended the Mountaineer's Route in 2h57m9s, with a round-trip time (descending the MR as well) of 5h36m3s. Lewis' GPS track is here. She said, "I ended up in the wrong gully coming down and had to climb back up and the couloir was sketch and slow going... not super runnable right now with all the water - I twisted my ankle badly and wiped out a few times. I reached the summit at 2h55m but touched that metal sign at 2h57m. Started my watch at the bottom Mt Whitney sign at the road."
Mountaineer's Route car-to-car
5h 36m 3s