Day 1 Upper Loop
The Park’s Grand Loop is shaped like a figure 8, divided into the Upper Loop and Lower Loop.
It’s a good strategy to devote one full day to each loop. If it works for your itinerary, do the Upper Loop on your first day. It’s a good introduction to the geothermal features of the Park and it’s only keeps getting more impressive on Day 2.
It doesn’t matter whether you drive clockwise or counter clockwise around the Upper Loop, I’ll go counter-clockwise for this article, and you can join anywhere along the route.