Can someone point me towards an online map that shows how the PCT and JMT intersect / overlap... or whatever it does ;-) I'm not sure at this point, that's why I'm asking! Thanks for any help.

Checkout the map on my JMT journal. The map is down towards the bottom of the journal entry near my signature.

http://www.Postholer.Com/Jeffrey Hunter

It doesn't show the JMT between Tuolumne Meadows & Yosemite Valley. That part of the JMT is not the PCT. The PCT also diverges from the JMT when the JMT heads toward the summit of Mt. Whitney in Sequoia NP.