Here is a link to our map trip we did on the Road Glide back in 2010, its on map quest so i'm not sure how it will pop up.
http://mapq.st/1EQdJQ8Our trip deviated a bit from that course because we saw signs for interesting things, that's how we stopped in Helena.
We had a blast.... hope we can do it again someday...
We had planned on going to illinios, then Kansas, then see the devils tower, then Yosemite, then Yellowstone, then salt lake, then the grand canyon, then where the little green guys landed in the 50's and then back home....why did we not do it and go the other way?.... we had the time and funds...and....the west was having really bad thunderstorms....LOL...we got wet anyway!