I live very near Sequoia National Park, so I plan to get up there to do some training hikes before October rolls around. I will be on Mt. Shasta for the first week of September so that should give me a good idea of how I do at altitude. However, I will have more time on Shasta to acclimate.

I will be running short of vacation days and time on Mt. Whitney. I only have three days time to get it done. Hopefully I will be able to acclimate in that time frame. If I had more time I would surely use it.

Would it help to take Diamox before the trip, even if I am not at altitude?