The south end of this route starts out in Vernal, Uintah County at the intersection of US-40 and US-191. From there, it travels north on US-191, enters Ashley National Forest, and passes Steinaker State Park and Red Fleet State Park as it starts to climb into the Uinta Mountains. It continues north on its climb, encountering several switchbacks before topping out close to in elevation. As it gradually starts to descend it enters Daggett County before it enters Flaming Gorge National Recreation Area. Just inside the recreation area boundaries, the route splits in two.