Scott:
Pasatiempo is right at 300 feet. That's the most elevation I can think of in any golden-age course meant to be walked.
My Rock Creek course is about 360 feet. Not many of the members walk it, but it's really not that hard to walk ... the routing is a long loop, so it's two miles from the top to the bottom ... you aren't going up and down the same hills over again, like Augusta National. [Incidentally, Augusta has exactly 150 feet of elevation change from the first tee to the 12th green, but you go down and up a lot of times on the front nine].
I believe Kapalua (Plantation) has more elevation change than Rock Creek, but I don't have a number for it. The old Village Course at Kapalua was something like 500 or 600 feet from the highest hole to the lowest, but nobody ever played it without a cart, of course.