Awesome!!! I have a few friends who thru-hiked the Pacific Crest Trail, and they said that John Muir was by far the best section of the whole thing. It's easily one of the prettiest hiking trails in the US, if not North America. You're going to have such an awesome trip. Have you done much long-distance hiking before? Have you purchased all your gear yet? I don't want to stick my nose where it doesn't belong, but I've done a good amount of long-distance hiking myself, and I'd be happy to talk with you about gear selection and whatnot. I've done a few 4 day weekends before, covering 40ish miles with a full pack, and done 4 days in the Rockies with huge elevation changes (but shorter mileage days). I've got most of my gear already (I could go out backpacking tomorrow if I wanted) but I plan to lower my weight and cut out a bunch of gear before I go. I also plan on a few weekends of longer backpacking this summer to be sure I'm ready (along with a general fitness regimen). Any tips or advice is always welcome, I am an over-preparer, so while I'm not working today, I'm plotting elevation changes and possible mileages on the trail.