Chubu-Hokuiku Trail Resources
Traildino is a trail hiking database that offers some basic information about trail. It has a few of the GPS maps listed but it is very scant in this area. Provides overview of complete trail.
This a government website that breaks the trail section by section. You can navigate it by clicking the pictures of the section you want to see. It is one of the more comprehensive sites I have found. There are no topographical or GPS maps on this site. This site also has other hiking trails in Japan. For the Chubu-Hokuiku Trail the Nature Lovers club also provides detailed brochures for this trail.
Fukui prefecture offers a complete overview of the nature hike, includeding infromation about the different prefectures.
This trail is divided into seven prefectures, and each prefecture provides there own maps. Depending on the prefecture they can be downloaded . All links are in Japanese. There are no links for Niigata Prefecture and Gnuma Prefecture currently.