Japan National Route 338

National Route 338
National Route 338
国道338号
	Japan National Route 338 highlighted in red
Route information
Length	241.3 km (149.9 mi)
Existed	1 April 1975–present
Major junctions
North end	National Route 5 / National Route 278 in Hakodate, Hokkaido
	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 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.