Hi! A friend and I are planning a road trip from Columbus, Ohio to Walla Walla, WA in Aug. We've given ourselves approx 10 days to get out there (we will be flying back). Is that enough time if we plan on little stops here and there? I know we want to stop around Mt. Rushmore and plan on a day or two in Yellowstone. We don't have a route set in stone yet as we would first like to get an idea if this is even feasible in the time frame set. Any recommendations on routes would be greatly appreciated as well. Other than the two spots mentioned we are pretty open. Thanks!