my wife and i did this loop. 2up on a vstrom. camping most of the nights with a couple of motels.
Choteau Montanaat 426km
first night camping.
Ennis Montanaat 756km
second night camping
amazing western style little town.
Bakers hole campgroundat 865km
just a few miles north of west yellowstone
3 nights camping
west yellowstoneat 870km
great stores and amazing food.
we did lots of sightseeing in the park from here.