I've been exploring this route for a couple of years. I was in my best shape but this pushed my limits. I figured about 7 1/2 hours to get up but it took me 10 hours, longer than my hike up the Main trail.

3:30am Depart Portal
4:30 E-Ledges
5:30 Lower Boy Scout Lake
6:30 Center of Clyde Meadows
7:00 Top of Clyde Meadows
8:50 Iceberg Lake
9:30 Depart Iceberg Lake
12:30pm Notch
1:30 Summit
1:40 Depart Summit
8:00 Portal (via Main Trail)

The Final 400 had some snow so I took the Easy Walk-Off


Mountaineers Route - Mt Whitney from Frank Bursick on Vimeo.