i've clicked out a rough map of the cannonball here:
http://veloroutes.org/bikemaps/?route=1058
(click "get elevation image" to download an image of the elevation profile)
although it should be noted that my elevation graph doesn't scale correctly, e.g. there's a lot more flat sections in the end than you see on the profile. i've heard that the last 100 miles or so seem to be a false-flat, but i haven't ridden it myself.
and here's another map of stevens pass, part of the S2S route:
http://veloroutes.org/bikemaps/?route=287
are you doing these rides this year? i'm thinking about both myself.