On Whitney in June, IIRC:
*Drank 64 oz between Portal and Outpost (2h 45m)
*At Outpost Camp I consumed 64 oz overnight (~ 9 hours)
*Between Outpost Camp and Trail Camp I drank 48 oz (1h 30m).
*Left Trail Camp with 112 oz of water. This lasted me all the way to the summit and back to Whitney Portal (carried too much obviously). Ran out as we left the trail
After this hike I read something that thought I may be drinking too much. I meant to post a question about it here, but forgot.
In mid-May I started up the chute in sub freezing temperatures, wearing just a base layer, carrying 4 L of water. The temperature all day never reached 40 F. When I reached the summit, I was well into the 4 L and was supplementing it with snow all the way to Trail Camp. I figure I went through 5 L.
I have never emptied 4 L in the summer...I am usually well into the 3rd or starting the 4th when reach a refill point.
Everything depends on ambient conditions and workload.
