Japan National Route 338

National Route 338
国道338号
Japan National Route 338 highlighted in red
Route information
Length	241.3 km[1] (149.9 mi)
Existed	1 April 1975–present
Major junctions
North end	National Route 5 / National Route 278 in Hakodate, Hokkaido
Major intersections	Tsugaru Kaikyo Ferry across Tsugaru Strait National Route 279 Shimokita Expressway National Route 394
South end	National Route 45 in Oirase, Aomori
Location
Country	Japan
Highway system
National highways of Japan Expressways of Japan
← National Route 337 → National Route 339

National Route 338 (国道338号, Kokudō San hyaku san jūhachigō) is a national highway in the Japanese prefectures of Hokkaido and Aomori. Route 338 stretches 241.3 kilometers (149.9 mi) from National Route 5 in Hakodate, Hokkaido south across the Tsugaru Strait by ferry to Ōma, Aomori, around the western, southern, and eastern edges of the Shimokita Peninsula and finally to Oirase.