A YAMAP activity log published on 10 November 2026 records a day hike in Tochigi that finishes at Sano Premium Outlets. The activity title lists Koseki-yama (晃石山), Iwafune-yama (岩船山) and Mikamo-yama (三毳山), then the outlet. In the notes, the hiker says the start was set at Ohira-yama (大平山) and the goal at the Sano outlet.
Recorded figures
The log gives these day totals:
- Time: 4 hours 55 minutes
- Rest: 44 minutes
- Distance: 18.7 km
- Ascent: 894 m
- Descent: 1,137 m
The course constant is shown as “hard” (29), calculated from a standard time of 8 hours 26 minutes. The entry also says a climbing plan was already filed and that GPX data is available. Checkpoint times appear from about 10:00 through the early afternoon, but the supplied text does not clearly attach each stamp to a place, so those splits are not listed here. No average pace figure is given.
Why this route
The hiker writes that the previous week was meant to include four weekdays off in a row, but work made one of those days impossible, so the day off was moved to the day of this hike. The weather on that day off was not especially good.
An autumn-foliage trip toward Okutama had been the earlier plan, but the destination was still undecided. The night before, the hiker’s wife said she wanted Gelato Pique loungewear for herself, after buying a set for their eldest daughter’s recent birthday. He took that as a request to go and buy it, and chose a hike that could end at an outlet.
Other outlets were ruled out because the mountains around them had already been climbed or were too far. Mt. Iwafune was the particular aim: the hiker says it had long stood out on journeys along the Ryomo Line, so the route served both purposes.
On the trail
Departure was leisurely rather than an early start in lingering light rain, and the hiker writes that launching YAMAP was completely forgotten at the outset. The trails were relatively easy to walk and quite well maintained, but there were more ups and downs than expected, so the day might feel quite demanding for the cumulative elevation. Compared with main routes nearer central Tokyo, there were somewhat more pebbles and branches. Including those elevation changes, the impression given is of Kita-Takao, but a little less trodden.
Transport
The notes list these connections:
- 7:44 Tokyo Station — Tohoku Shinkansen — 8:26 Oyama Station
- 8:56 Oyama Station — Ryomo Line — 9:14 Ohirashita Station
- 14:52 Sano Premium Outlets — route bus — about 15:15 Sano Station
- 15:31 Sano Station — Tobu Sano Line — 15:48 Tatebayashi Station
- 15:51 Tatebayashi Station — Tobu limited express Ryomo — 16:42 Kita-Senju Station
Original activity log: https://yamap.com/activities/52611603
