There is some dirt crossing on the lower elevations. Although, if you were going to ski Copper, you could probably stay on snow if you were following the drainage up to the N. side.
I've been training mostly for sport climbing, so I thought that my cardio would be an issue, but it wasn't. I fueled entirely on GU gels and lot's of water. I could have used some Hammer Perpetuem to fill in the lows the GU brought. Bob says that the 10 pounds of ski fat that I lost was probably the difference. Maybe. We had an Alpine start, so we were back in town with plenty of time for yard work and Birthday parties!