I think the drive through YNP would be doable but it won't be fast. There is a lot of traffic to begin with and then you will have all sorts of jams to slow you down.
If you're in Cody and have time, do the Beartooth Highway/Chief Joesph Scenic Highway loop. Spectacular! You can't the the MH though.
It looks like the distance is about the same either way, about 180 miles.
Karen & Gary
Glamping is not for the faint of heart!
with furkids Gypsy & Cody &
traveling in a 2011 Ventana 3433!