It connects Hachinohe in eastern Aomori to Ōwani in the western part of the prefecture.

It has a junction with the branch route of the Hachinohe Expressway that is accessible only if drivers have electronic toll collection enabled.

Continuing west to the town of Gonohe, the road runs concurrently with National Route 4 for about four kilometers traveling north.

After departing the concurrency heading west once again the road enters the village of Shingō, then crosses into Akita Prefecture.

Curving to the north, the road reaches the southern shore of Lake Towada and reenters Aomori Prefecture where it shares a concurrency with National Route 103 as the roads travel west along the shore of the lake.