Through the park can be a real chore. The roads are narrow and winding. When we went we parked the rig and took a tour bus to the sites. The tour bus driver pointed out numerous gash's on trees beside the road where motor home mirrors are knocked off. Tree's are right at the edge of the pavement. They actually go out and collect the mirrors every evening. Then there are the bison, who when they take over the road belongs to them. We lost hours literally when the whole herd took over the road. If your in a hurry I wouldn't go through the park.