You can check my GPS recording from last year here:
https://www.gaiagps.com/map/?loc=11...2d83fceb215e00c8d7ea2a3685edc195ff8f26b9Williamson via Shepard Pass, Down to George Creek, Up to Trojan and Barnard, Down to Wallace Lake, Russell - Carillon Pass, Whitney via Mountaineering Route and down to Portal via Whitney Trail.
I took the wrong way down from Williamson to George Creek, so don't go this way. Crazy long, steep chute and any little mistake can get you injured.
https://www.flickr.com/gp/194919264@N03/e542Xx
Red and purple are correct ways up/down. Blue is a chute I took.