SH 134 begins in the west at Toponas and proceeds eastward entering Routt National Forest after three miles (5 km). From there the road climbs gradually for roughly thirteen miles to an elevation of at Gore Pass. At Gore Pass the route moves into Arapaho National Forest through which it passes for roughly three miles before leaving National Forest Service land. SH 134 continues for approximately eight more miles to its eastern terminus at US 40 six miles (10 km) north of Kremmling.