From Temple 23, Yakuoji, to temple 24, Hotsumisakiji, on the Shikoku 88 temple pilgrimage it is more than 80k, and is they first of the long distances between temples. For most pilgrims who do it by tour bus or car it is just a couple of hours, but for those walking it is usually 3 days.
The second half of this route is fairly uninhabited with long stretches of road with the sea on one side and mountains on the other. There are a few small settlements and a few small shrines and such, but it is a nice long stretch with nothing but traffic for company.
I i9magine that if the weather is not so good then maybe it is not so enjoyable, but when I walked it the weather was fine, the road was flat, and the views good.
At lunchtime I disturbed a troop of monkeys feeding the trees at the side of the road... I guess about 20 to 30 of them.....