Day 5 route Starvation State Park UT to Bozeman, MT which is all in Mountain Time Zone. I'll help you with encouragement!
Too bad I don't have a more capable dirt road motorsickle! Bridger-Teton National Forest
Scenic Drives.
Looking at all the routes and especially this fifth leg, one would have to say that Sept 8-9 Wednesday/Thursday, leans heavily towards Sept 9 Thursday! Especially being as Old Faithful and Big Sky are on the route!