For those that might be interested, I created a GPS route from East TN that follows the Pony Express/Oregon Trail out to western Nebraska. I also had a return route that follows some of the Lewis and Clark Trail. If you are interested in a copy, send me a email and I will send you the routes. You will just need to modify the beginning portion for what you need. The route crosses the Missippi on a Ferry for something different.
Rick Giddish
East TN State Director