Oirase Gorge Autumn Foliage: Best Dates and the 9 km Walk

Oirase gorge autumn foliage peaks in the last week of October, when the maples turn red above more than 300 species of moss. The gorge itself is 14 km of stream, waterfall and moss-covered rock running out of Lake Towada in Aomori, and it is one of the few places in Japan that looks better in person than in photographs.

Most coverage of Oirase is really coverage of one hotel, the Oirase Keiryū Hotel by Hoshino Resorts. It is a very good hotel. It is also not required, and the assumption that it is puts people off coming at all.

This is how to do Oirase from Tokyo: the three dates that decide the whole trip, which 9 km of the 14 to actually walk, and which of the hotel’s famous experiences you can book without spending a night. Prices and hours were verified in August 2026.

The Three Dates That Decide Your Trip

Timing applies to an Oirase trip in every aspect. If you get these incorrect, you’ve travelled 700 kilometres for a closed road. 

7–13 September 2026 — the private vehicle ban. The gorge road closes to private cars for a week, and 13 September is the first full closure to every vehicle class in the programme’s history. This should not deter you from doing the gorge, it’s the best week of the year to do it, in that the roar of the road is stilled. A shuttle runs every 30 minutes during the closure: ¥1,500 for a day pass bought as an e-ticket, ¥2,000 on the day. 

10 October — the Lake Towada cruise cut-off. Until 9 October the last boat leaves Nenokuchi at 16:00. From 10 October it leaves at 13:30. Should you intend to walk the gorge as far as the lake and then cross in a boat, that plan quietly stops working in the middle of the autumn, and there is nothing at Nenokuchi to fall back on. 

Late October to early November — peak foliage. This is when the maples turn against the moss, which is why you come in autumn rather than summer. It is also the only week the area is really busy, so you need reservations in advance. 

One more constraint: the JR buses operating the gorge are not in service from mid-November to mid-April. There are waterfalls that freeze in winter and there is a trip to Winter Oirase, but it is a different trip with different logistics, not a late add-on to this one.

Getting there from Tokyo

There is no way to make this a day trip, and you shouldn’t try. Take the Tōhoku Shinkansen from Tokyo Station to Hachinohe, about three hours on the Hayabusa. From Hachinohe the JR Oirase-gō bus runs to the gorge in about 2 hours 20 minutes for ¥3,050. Coming via Aomori instead, the Mizuumi-gō bus takes about 2 hours 45 minutes and costs ¥3,480. 

Route buses do not offer a day pass; fares are per journey, cash or IC card. Hoshino Resorts also runs a free shuttle to the hotel from Hachinohe Station, Aomori Station and Aomoriya, worth using if you are staying with them. 

Realistic considerations: depart Tokyo mid-morning, arrive at the gorge late afternoon, spend one night at the gorge, walk the next morning before the arrival of coach parties and the light fades. Two nights if you’d like Lake Towada as well.

Walk this 9 km, not the full 14

The gorge is 14 km long and it takes around 5 hours from end-to-end. The top part brings the majority of visitors. 

Ishigedo to Nenokuchi — about 9 km, roughly 2.5 hours. Flat and smooth from top to bottom, along the pathway of the stream. The waterfalls included here, such as Chōshi Ōtaki (the only one to plunge into the main stream) and Kumoi no Taki, are also named. It ends at Lake Towada. 

The lower 5 kilometres below Ishigedo have fewer named features and a lot more road. Skip it, begin at Ishigedo, and take the bus to the trailhead. 

Bicycles hire at the Oirase Stream Museum at the entrance to the gorge: ¥1,000 standard, ¥2,000 electric, 9:00–16:30. The path is flat enough that the electric bike is a luxury, not a necessity.

The hotel — and what you can book without staying there

Oirase Keiryū Hotel is the only resort constructed on the gorge, within the limits of Tōwada-Hachimantai National Park, with an outdoor bath and onsen water piped from Mt Hakkōda. People take the photos in the lobby, which is a giant wooden room with floor to ceiling glass frontage looking to the forest with Okamoto Tarō’s Myth of the Forest fireplace in the middle. 

Prices fluctuate greatly by season and autumn is the expensive end. Check the official site rather than trusting a number in a blog post. 

Here is the typical mistake people make in their write-ups: several of the hotel’s signature experiences are not guests-only. 

The Oirase Open-Top Bus Tour runs 15 May to 3 November, leaving the hotel’s Keiryū-BASE counter at 11:05 and 13:20 for a 90-minute round trip to Lake Towada with no roof over your head. ¥4,950 per person, age 4 and up. There’s the hotel guest version and a separate day visitor version, and Hoshino explicitly welcomes non-guests on the latter. 

During the greens season there are moss activities, such as the Moss Trail using magnifying glasses (1 June – 25 November, reservation required), the moss ball workshop (10 April – 25 November), and Moss Art Watching at the hotel’s moss wall, which is free and needs no reservation. 

The dessert that does the rounds on Instagram every summer, the moss shaved ice, runs 5 June to 30 August, Fridays to Sundays only, by reservation.

💡 Japan Pro Tip: The open-top bus is limited to 10 people at a time, and only 5 during the two months everyone wants it — August and October. Reservations close at 18:00 the day before through Asoview, and same-day cancellation is charged at 100%. Book it before you book your train, not after. The tour is conducted in Japanese: the views do not require translation, but the commentary does.

When to Go for Oirase Gorge Autumn Foliage

Late October to early November for foliage. This is the headline season, the crowds, and the reason the hotel doubles its rate. 

June to August for moss. The forest is in its greenest state, all the moss activities are running, and you will have the trail to yourself compared with autumn. This is the kind of shot the ELLE feature and most of Instagram is showing. 

Early to mid September for the walk itself. Cooler than summer, quieter than autumn and, if you land in the car-ban week, the gorge without engine noise. 

From mid-November to mid-April the buses stop, most access closes, and the gorge turns into a winter destination reached a different way. Don’t plan a first visit then.

Know before you go

• Book accommodation before anything else. There is very little of it near the gorge, and in foliage season it goes months ahead. 
• The trail is flat but long. Nine kilometres of gravel needs proper shoes — not the ones you wore around Shibuya. 
• Bring cash. The buses accept IC cards, but this is rural Aomori and the smaller facilities may not. 
• Phone signal is patchy along the gorge. Download your maps and your bus times before leaving Hachinohe. 
• The trail has no litter bins, in line with national park practice — carry everything out. 
• Pair it with Lake Towada, which the trail delivers you to, or with the Inakadate rice paddy art an hour or so away if you are there before mid-October.

FAQ

When is the best time to see autumn foliage at Oirase Gorge?

The end of October into the first days of November. Colour begins in early October, but the maples against the moss — the reason people come — peak in that final week. Book accommodation months ahead for that window.

Can you visit Oirase Gorge without staying at the Hoshino hotel?

Yes. The gorge is a public national park trail, free to walk, reached by JR bus from Hachinohe or Aomori. Even the hotel’s open-top bus tour has a day-visitor version at ¥4,950 that non-guests can book.

How do you get to Oirase Gorge from Tokyo?

Take the Tōhoku Shinkansen about three hours to Hachinohe, then the JR Oirase-gō bus for about 2 hours 20 minutes and ¥3,050. Via Aomori, the Mizuumi-gō bus is 2 hours 45 minutes and ¥3,480. Buses are not in service from mid-November to mid-April.

How long does it take to walk Oirase Gorge?

The full 14 km takes about five hours. The section worth walking, Ishigedo to Nenokuchi, is approximately 9 km on a fairly flat path and takes about two and a half hours.

Is Oirase Gorge worth visiting in summer?

Yes, and it’s the underrated season. The moss is at its best from June through August, the hotel’s moss activities are all running, and the trail is much quieter than in October. You trade the red canopy for having the place to yourself.

Go before the buses stop

Oirase’s usable season closes in mid-November and does not reopen until April. If you want the moss, you have until the end of August. If you want the foliage, you’re looking at the last week of October — and the accommodation for it is being booked right now. 

Oirase is not a day trip, but if you want the ones that are, our guide to the best day trips from Tokyo by train covers seven under two hours. Deciding when to come more broadly? Our guide to the best time to visit Japan runs through all twelve months.