Sasaguri, in the mountains just north of the sprawling metropolis of Fukuoka, is home to a miniature version of the famous 88 temple Shikoku Pilgrimage. It is less than 50 kilometers in length, but took me 4 tough days to walk because it is up and down, up and down.
Some of the temples are quite large complexes, in fact the pilgrimage stops at Nanzoin, home to the largest reclining Buddha in Japan. Many of the temples are small, wayside chapels, unmanned but usually with quite a lot of statuary. Surprisingly, in such a small area, the route also passes by many other temples that are not included in the pilgrimage.
Being in the mountains there is a high percentage of temples with waterfalls that are used for ascetic training, consequently there are many, many statues of Fudo Myo,..... literally hundreds of them.
The highest point reached is 680 meters above sea level, to a cave on top of Mount Wakasugi where Kobo Daishi spent time after he returned from China.
A few kilometers are along busy main roads, but most of the route is either well marked walking trails or narrow mountain roads with no traffic. You pass through a lot of bamboo forest including one on the 3rd day that was the most enchanting bamboo forest I've ever been in....