[pct-l] altitude sickness

[losthiker at sisqtel.net (Deems)]

I was wondering, if I hiked in Flag once a week, would that help acclimate 
for the higher altitudes on the JMT this summer;
^^^^^^^^^^^
First, you show that you are aware of the challenges of alpine hiking, which 
will help in your knowing your limits, and that it could be a problem if 
recognized.  I think that your proposed Flagstaff hiking will be a benefit. 
If possible, carry a full pack and spend some nights camped up as high as 
possible, which will give a time at altitude benefit. Also, hike as much as 
possible before your summer adventure, to be in the best physical condition 
possible for the Sierra; the JMT will be a challenge!  If you are doing the 
JMT only, then start at Yosemite and go southbound. It is the easiest way to 
succeed, the altitudes will then increase gradually, and the challenge and 
scenery will also increase as you hike southward. Also going southbound, the 
reload opportunities are greatest in the first half, which will allow 
lighter loads for the first half while you are acclimating. The best 
prescription for altitude acclimation is alpine adventuring, physical 
conditioning, and personal genetics. I lucked out on the latter and adapt to 
altitude quickly, but I also try to maintain a level of conditioning that 
allows me to adventure serendipitously.

http://www.pbase.com/losthiker/the_high_sierra  a few pics of the Sierra to 
enjoy!