I created this route
http://tinyurl.com/5npaqh earlier this spring with the help of an experienced local tourist. It mainly uses us-18/sd-44 in south dakota, the michelson trail (replaced in the link with a highway), us-14/us-85, and us-16 across wyoming into yellowstone, and us-89 to glacier national park. Could anyone with experience comment on the availability of food, water, and possibly even camping along these roads? Camping options look sparse in south dakota. We're in western Virginia right now, hopefully we'll be in south dakota by mid-August. Any tips on warm weather clothing, such as when to get some, or any other general advice? Thanks