Motomiya is a city located in north-central Fukushima Prefecture, Japan. As of 1 March 2020, the city had an estimated population of 30,401 in 10,680 households and a population density of 350 persons per km2. The total area of the city was 88.02 square kilometres (33.98 sq mi). It is the smallest city in Fukushima Prefecture, both in terms of population and size.

The Tōhoku Expressway is a south-north national expressway, and the longest expressway in Japan at 679.5 kilometers (422.2 mi). Its southern terminus is in Kawaguchi, Saitama in the Greater Tokyo Area, at the Tokyo Gaikan Expressway and Kawaguchi Route near Araijuku Station, and its northern terminus is at Aomori Interchange in Aomori, Aomori in the northern part of the Tōhoku region, where it meets the Aomori Expressway and Aomori Belt Highway near the Sannai-Maruyama Site.