Wow! So long distance but still in good shape.
So how did you feel at that 110km point? I have been on the next road west that connects over. Well done none the less.
Felt great, as I had just finished the Yaruki Jizo climb (which is apply named, as one needs a good does of it to get there). By "the next road west", are you referring one that's got a few hundred meters of unpaved gravel descent, when approaching from the north? If so, I did that (from the north) one time earlier, not having known it was unpaved and not really knowing where it went. (https://www.strava.com/activities/808558031). The little village at the north end of that road is really quaint, like a snapshot from the 1950s, I imagine.