A YAMAP activity log titled “猿投山-Sanageyama, Monomiyama,” with a source timestamp of 10 November 2026 at 20:50 (UTC+8), records a hike on Sanageyama. The logged totals are 4 hours 9 minutes, 11.4 km, 712 m of ascent and 711 m of descent, including 18 minutes of rest. The entry gives a course constant of 20, rated ふつう (ordinary), calculated from a standard time of 5 hours 21 minutes. The recorded times run from 12:09 to 16:18. A pace label appears in the activity data, but no separate pace figure is stated.
The hiker wrote that rain had been forecast for the morning, while the sky was cloudy, and that the afternoon looked likely to clear, so they went to the mountain. On a weekday afternoon the first parking lot was empty, and they started there.
They described the view from Oiwa Observatory (大岩展望台) as a very good panorama, paid respects at Higashi-no-miya (東の宮), passed Frog Rock, and reached the summit. They felt they had arrived somewhat earlier than usual. The temperature was 9°C, and Mount Ontake (御嶽山) was clearly visible. As the wind strengthened, they moved on, returned to Higashi-no-miya for a lunch break, then continued past the source of the Hirosawa River (広沢川) and Mifuneishi (御船石) to Nishi-no-miya (西の宮), where they prayed for a safe hike.
From Nishi-no-miya they headed toward Nanataki (七滝). Because there had been an earthquake a few days earlier, they were slightly worried about fallen rock, but wrote that it seemed all right. They finished via the Takeda road (武田道), aiming for the ruins of Hirosawa Castle (広沢城跡), and returned to the first parking lot. They called it an autumn day and their last hike in their 50s.
The source’s checkpoint list is a dense string of times and is not reproduced here as a stop-by-stop itinerary.
Original activity log: https://yamap.com/activities/52613280
