Japan National Route 401

National Route 401 is a national highway of Japan comprising two separated segments between Aizuwakamatsu, Fukushima and Numata, Gunma in Japan, with a total length of 171.1 km (106.32 mi).

National Route 401
国道401号
Route information
Length	171.1 km[1] (106.3 mi)
Existed	1982–present
Location
Country	Japan
Highway system
National highways of Japan Expressways of Japan
← National Route 400 → National Route 402

Route description

A section of National Route 401 in the village of Katashina in Gunma Prefecture is a musical road.^[2]