I've been to these places several times and if I was going back with your time allotment I would do this:
2 days Black Hills, Rushmore, Badlands
2 days driving toward YNP unless you want to drive 500 miles in one
day. If you are taking 90 to Billings you can take 120 to Cody and
see some of these sites here like the Buffalo Bill museum and the
little ghost town.
Get in your toad and drive the Chief Joseph Highway to 212
(Beartooth Highway) to Red Lodge. This is a "not to miss" drive.
From Cody take the Buffalo Bill Cody Scenic HWY into the East
entrance to YNP. (This is a beautiful drive, also)
5 days YNP (You'll have to come back several times to really see it
all anyway. LOL)
2 days in Grand Teton
3 days to go home.:M
Have fun.....there's no place more beautiful than what you will see here!
