Japan Winding Roads #5: The Mountain That Closes at Noon on October 14 — Otaki Village and the End of the Road at 2,180m
Mount Ontake's Otaki trailhead stays open only until noon on October 14, and the Ontake Skyline above it closes on November 5. Planning a ride to Tanohara at 2,180 meters by counting backward from the dates it all ends.
KEY TAKEAWAYS
- The Ontake Skyline (Otaki Village Road 41, Hakkaisan to Tanohara) closes for winter on November 5, 2025 — earlier if snow arrives first — and is scheduled to reopen on May 2, 2026. It ends at Tanohara Natural Park, the seventh station of Mount Ontake, at 2,180 meters.
- Mount Ontake's Otaki trailhead is passable from 9:00 a.m. on July 10, 2026 until noon on October 14. The permitted section runs only from the Tanohara parking area via the Otaki summit to Kengamine; the route from the ninth station toward Okunoin and the crater rim loop remain restricted this year.
- The volcanic alert level was lowered to Level 1 on May 20, 2025, but the entry restriction continues separately under the Basic Act on Disaster Management. The JMA alert level and the area you may actually enter are not the same thing.
Last time I wrote about a pass that opens on September 18 — the Shirakawa side of Amou Pass, finally scheduled to come out of closure that day. A start date, in other words. Several readers wrote to say that waiting for a road to open is part of the trip too, and they have a point. But spread out a map and you notice the obvious: there are far more end dates than start dates. This autumn, the two endings on my mind are noon on October 14 and November 5. Both belong to the same place — Otaki Village in Kiso, Nagano, on the southwest flank of Mount Ontake. One village, two gateways that close at different times. A place like that needs its running order thought through.
Start with the road. The notice from the village office is short. Village Road 41, the section from Hakkaisan to Tanohara, closed for winter from Wednesday, November 5, 2025 through Friday, May 1, 2026, reopening Saturday, May 2. And then one added line: if snow falls before November 5, the closure starts earlier. So November 5 is not a promise; it is the latest possible date. Village Road 41 is better known as the Ontake Skyline. It ends at Tanohara Natural Park, the seventh station of Mount Ontake, at 2,180 meters. According to the hill-climb course notes published by Kiso Ontake Cycling World, the route gains 1,530 meters, hits a maximum gradient of 20.9 percent, and runs more than twenty kilometers of pure climbing. People ride this on bicycles. We get to use an engine. The section named in the notice runs unbroken from Hakkaisan to Tanohara, and no branching detour is signposted along it. Once the gate comes down, there is no other way up to Tanohara. Amou Pass last time was open on one side only; here it is binary, open or shut. Which is why checking the village notice before setting off is a chore I refuse to skip on this particular road.
The other date, noon on October 14, is about the mountain rather than the road. Per the village's announcement, the Otaki trailhead on Mount Ontake is open from 9:00 a.m. on July 10, 2026 until noon on October 14. The permitted stretch is limited too: from the Tanohara parking area, past the Otaki summit, to Kengamine. The path from the ninth station toward Okunoin, and the crater rim loop, remain under entry restriction again this year. The volcanic alert level was lowered to Level 1 — "be aware this is an active volcano" — on May 20, 2025, yet the village keeps its restriction in place under the Basic Act on Disaster Management. Those two things deserve to be kept apart. An alert level is the Japan Meteorological Agency's classification; how far you may actually walk is decided by the local government. Read them as one thing and you will be turning around after you arrive. Riding up to Tanohara has no direct bearing on the climbing deadline, but the parking area and the mountain huts run on the climbing season. The mountain shuts at noon while the road below it stays open until November. It is a place with that kind of time lag built in. One practical note. There is a parking area at Tanohara, and the Otaki trail starts from it. After noon on October 14, nobody is walking above you. The road itself, though, will most likely still be open until November 5. Ride up to a seventh station emptied of people, breathe the air at 2,180 meters, and come back down. Line up the dates and count, and that window works out to roughly three weeks.
So is it just ride up, ride down? Not anymore — the village now gives you a reason to stay. ONTAKE EXPLORER PARK, at 3162 Otaki Village, sits at roughly 1,680 meters. On July 25 and 26 this year, Kawasaki and Kushitani held a fifty-rider camp ride there: off-road test rides on the KLX230 S and KLX230 SHERPA, a stargazing session, an early-morning ride above the sea of clouds. Reading the announcement alone made me envious. Manufacturers pick their locations for a reason, and 1,680 meters is the altitude where you still want a light down layer at night in August. I have booked a lot of these "escape upward" nights over the years, and Otaki is one of the more welcoming of them. Spread the map out over a coffee at a roadside station and copy two dates into your notebook: noon on October 14, and November 5. The weekends left between them are how many times you can ride this village this year. Where to next? I have already made up my mind.
Sources and references
Public information cited or consulted while preparing this original feature.
- Otaki Village: Winter closure of Village Road 41 (Hakkaisan–Tanohara)
- Otaki Village: Mount Ontake information (entry restrictions and Otaki trailhead season)
- Kawasaki Good Times Journal: Kawasaki x Kushitani Camp Ride at ONTAKE EXPLORER PARK
- Kiso Ontake Cycling World: Ontake Skyline hill-climb course data
- MotoBook Wire: Kawasaki and Kushitani hold a 50-rider camp ride at 1,680m in Nagano





