Thanks all. I run 5+ miles at a 8:00/min pace 3-4 times a week. i try to spend as much time on the bike as possible but that's a challenge living close to downtown, or anywhere in Houston. I plan to supplement my usual regimen with some weights for the pack and will do Rice stadium stairs to get better suited. I used to work downtown and people would train by going up the building stairwells but thats verboten building management at my current office.

As for acclimatization, I plan to stay at the whitney portal or cottonwood two days before setting out.

One last question, if I am back to whitney portal by 2pm Sunday is it feasible to make a 7pm flight out of LAX or would that be cutting it too close?