Both options can be done from UBSL camp in a day if you start early and move reasonably fast.
Or you could start from the car long after the sun comes up, do the East Ridge on Russell, descend the South Face, climb the North Face of Whitney, trot down the trail to Muir, hike/jog back up the trail to Whitney, descent the Mountaineers route, and be back at the car long before the sun goes down. I didn’t mention that option before, because that’s not what Hoot was asking about.
