Japan National Route 348

National Route 348 (国道348号) is a highway in Japan on the island of Honshū which runs from Nagai City in Yamagata Prefecture to Yamagata City, in the same prefecture.

Route description

 * Length: 45.3 km (28 mi)
 * Origin: Nagai City
 * Terminus: Yamagata City
 * Major cities: Yamagata

Municipalities passed through

 * Yamagata Prefecture
 * Nagai - Shirataka - Nan'yō - Kaminoyama - Yamagata