Originally Posted By: Carry on
How much need to get to summit and back to last water?

Start with 3 liters from Trail Camp or the switchback 23. Finish one off at Trail Crest. Hide the empty and a full one there for the way back. Carry and use one for the R.T. from TC to summit and back. If you need more, add a little clean snow to your water (if you can find any).