Katashina Village Guide: Gateway to Oze National Park

Why Katashina Village Is the Gateway to Oze

Katashina Village (片品村) is a small rural community in northern Gunma Prefecture that serves as the primary Gunma-side entry point to Oze National Park. If you are coming from Tokyo to hike Oze's famous wetlands, Katashina and its sub-town Tokura (戸倉) are where your trail journey begins.

Oze National Park stretches across the borders of Gunma, Fukushima, Niigata, and Tochigi prefectures, but Katashina offers the most direct access to the park's two signature landscapes: Ozegahara Marshland (尾瀬ヶ原) and Ozenuma Pond (尾瀬沼). According to the Katashina Village Tourism Association, the village connects to three trailheads that lead into the park, with shuttle services running during the hiking season.

Katashina itself is quiet — a farming village along the Katashina River, surrounded by mountains. There are no major tourist attractions in the village proper, but that is part of the appeal. It is the starting point for one of Japan's most celebrated nature walks. For a broader look at Gunma destinations, see our Gunma city guide.

Oze's Three Trailheads from Katashina

According to the Oze National Park Route Map, Katashina Village provides access to three main trailheads: Hatomachitoge Pass, Oshimizu, and Fujimishita. The first two are the most used.

Hatomachitoge Pass: The Most Popular Route

Hatomachitoge Pass (鳩待峠) is the most popular Gunma-side entry to Ozegahara Marshland. From the pass, a well-maintained trail descends through forest to the marshland boardwalks. The walk from the pass to Ozegahara takes approximately 1-1.5 hours downhill.

This is the route most hikers take for a day visit to the wetlands. The trailhead has basic facilities. Parking costs ¥2,500 (~$17) per day for private vehicles, according to the Oze Foundation. During peak periods, private car access may be restricted and shuttle buses operate from Tokura — check current regulations before driving.

Oshimizu: Access to Ozenuma Pond

Oshimizu is the trailhead for Ozenuma Pond. Parking costs ¥500 (~$3) per visit. This route leads to a different part of the park — the mountain pond surrounded by peaks — and attracts fewer hikers than Hatomachitoge.

Both trailheads are accessible from Tokura via shuttle or private car. The choice depends on whether you want the marshland walk (Hatomachitoge) or the mountain pond circuit (Oshimizu).

Walking Ozegahara Marshland

Ozegahara is a high-altitude wetland — one of the largest in Japan — famous for its wooden boardwalks that wind through open grasslands, ponds, and wildflower fields backed by mountain ridges. The boardwalks are flat and well-maintained, making the walk accessible to most fitness levels.

The landscape changes dramatically by season. According to the Katashina Village Tourism Association, skunk cabbage (mizubasho) blooms in late May through June, carpeting the wetland in white. Summer brings a variety of wildflowers across the marshland. Autumn foliage peaks in September and October, when the grasses turn gold and the surrounding mountains display red and orange.

The boardwalks protect a fragile ecosystem — stay on the designated paths at all times. Carry out all trash. The marshland atmosphere is peaceful and uncrowded on weekdays, though weekends during mizubasho season can be busy.

For hiking and nature options closer to Numata city, see our Numata nature guide.

Mountain Lodges and Overnight Stays

Oze's mountain lodges (山小屋, sanso) offer basic but comfortable overnight accommodation for hikers. Staying overnight lets you experience the marshland in early morning light — before day-trippers arrive — and makes the trip less rushed.

Lodges near Hatomachitoge Pass include Hatomachi Sanso and Shibutsu Sanso. According to the Oze National Park Route Map, bookings are made by phone. Current pricing is not published online — contact the lodges directly or ask the Katashina Village tourism office for assistance.

• Hatomachi Sanso: 0278-25-3839
• Shibutsu Sanso: 090-6946-3302 / 0278-58-7311

Lodges are small and fill quickly during peak season (June through October). Book as early as possible, especially for weekend stays. Phone reservations may require Japanese — consider asking your accommodation in Katashina or a Japanese-speaking friend to assist.

Katashina Village has limited accommodation options — check locally for current availability. Tokura has a few accommodation options near the shuttle departure points.

Getting to Katashina and the Trailheads

Reaching Katashina requires planning, especially without a car. There are three main approaches.

Direct Highway Bus from Shinjuku

According to katashina-japan.com, a direct highway bus runs from Shinjuku Expressway Bus Terminal to the Oze trailheads during hiking season. The journey takes approximately 4 hours. This is the most convenient option for hikers without a car — no transfers, and the bus drops you close to the trail.

Schedules and pricing vary by year. Check the bus operator's website for current timetables. Seats should be reserved in advance, especially on weekends.

Train and Bus via Jomo-Kogen Station

From Tokyo, take the Joetsu Shinkansen to Jomo-Kogen Station (approximately 1 hour 15 minutes). From there, a bus runs to Tokura (approximately 2 hours), and a shuttle continues to Hatomachitoge Pass (approximately 25-35 minutes). The total journey takes roughly 3.5-4 hours.

This route involves two transfers and requires checking multiple bus schedules. For a look at Numata as a transit point along the way, see our Numata city guide.

Driving and Trailhead Parking

From Tokyo, take the Kan-Etsu Expressway to Numata IC, then follow Route 120 through Katashina to Tokura and on to the trailheads. The drive from Numata IC to Hatomachitoge Pass takes approximately 50 minutes (about 50 km).

Parking Location	Price	Notes
Hatomachitoge Pass	¥2,500/day (~$17)	After day 2: ¥1,000/day. May be restricted during peak times.
Oshimizu	¥500/visit (~$3)	Less crowded than Hatomachitoge
Tokura (Snow Park)	¥500-4,000 (~$3-27)	Varies by duration and vehicle type

During peak periods, the road to Hatomachitoge Pass may be closed to private cars, with shuttle buses operating from Tokura instead. Check current regulations with the Oze Foundation before driving.

Best Season to Visit Oze from Katashina

Trails from Katashina to Oze are open from late May to early November, according to the Oze National Park Route Map. Roads and trails close in winter due to snow.

Season	Highlights
Late May - June	Skunk cabbage (mizubasho) bloom across the marshland
July - August	Summer wildflowers, warm weather hiking
September - October	Autumn foliage, golden grasses on the wetland
November - April	Closed (snow). Tokura has winter ski facilities.

The most popular time is late May through June for the mizubasho bloom. Weekends during this period are crowded — visit midweek if possible. Autumn offers fewer crowds and spectacular color. Summer is warm and pleasant, with the widest variety of wildflowers.

Konsei Pass (Route 120) connecting to Nikko also closes in winter, limiting through-routes. Plan your approach accordingly.

Frequently Asked Questions

Can I visit Oze National Park in a day trip from Tokyo?

It is possible but tight. The direct highway bus from Shinjuku takes approximately 4 hours to the trailheads, giving you roughly 3-4 hours of hiking before the return bus. An overnight stay at a mountain lodge is strongly recommended — it lets you experience the marshland at dawn and hike at a relaxed pace.

How much does trailhead parking cost at Oze?

Hatomachitoge Pass parking costs ¥2,500 (~$17) per day for private cars, with subsequent days at ¥1,000 (~$7). Oshimizu parking is ¥500 (~$3) per visit. During peak periods, private car access to Hatomachitoge may be restricted and shuttle buses operate from Tokura.

When is the best time to see wildflowers at Oze?

Skunk cabbage (mizubasho) blooms late May through June — this is the signature Oze experience. Summer wildflowers appear July through August. Autumn foliage peaks in September and October. Trails are open late May to early November, with roads and facilities closed through winter.

Do I need to book mountain lodges in advance?

Yes. Lodges near the trailheads are small and fill up quickly during peak season (June through October). Book by phone as early as possible. Phone reservations may require Japanese — the Katashina Village tourism office can assist. Weekend stays during mizubasho season are especially competitive.