A YAMAP activity record headed “Toward Japan’s lowest Mount Fuji – Akita” lists a time of 1 hour 23 minutes, a distance of 5.3 km, 89 m of ascent and 86 m of descent. Break time is 3 minutes, and the day total matches the 1 hour 23 minutes. The route is called easy, figured from a standard time of 1 hour 49 minutes.
The writer says they did not know the place beforehand and went only as a peak hunt. They note that standards for “Japan’s number one” vary, and that natural mountains are probably recognized even by the Japan Mountain Society, though they mark that point with a question.
They contrast an extreme Akita example, Ogata Fuji (大潟富士): one-thousandth the size of the real Mount Fuji, a constructed mound of 3.8 m from below sea level at an elevation of 0 m. They stress that this one is “Fuji,” not “Fujisan.”
Of the peak on this outing, 明田富士山, they write that it might count as a genuine Fujisan, while saying they will not add it to their tally of genuine Fujisan ascents for now. They call the view their own and say it is not a local Fuji. Their personal rules, which they say they set arbitrarily and have not changed, are that the map labels it Fujisan; that the 3,776 m Kengamine counts as Fujisan and represents the mountain including other outer-rim peaks; that a Fujisan sign is enough even without a map name if the area treats it as a mountain; and that the reading Fujiyama or Fujisan is acceptable.
Original activity: https://yamap.com/activities/52634344
