Enjoy Travel to Japan!
Home

Yoro Keikoku, Chiba – Waterfalls, Hiking Trails & Autumn Colors

Yoro Keikoku, Chiba – Waterfalls, Hiking Trails & Autumn Colors
Yoro Keikoku (Yoro Valley) in Otaki, Chiba is a scenic gorge known for riverside walks, lush forests, and seasonal views—especially fall foliage. Don’t miss Awamata Falls and the easy-to-follow nature trails, then unwind at Yoro Keikoku Onsen. This guide covers highlights, trail options, best seasons, access, and local food.

Highlights

Yoro Valley Overview

Yoro Valley in Otaki, Chiba is a top Boso scenic spot known for riverside trails, waterfall walks, and autumn foliage.

Choosing a Hike

You can pick by difficulty, such as the waterfall-walk trail near Awamata Falls (about 4 km) or the Daifukuyama–Umegase course (about 12 km).

Awamata Falls Up Close

Chiba’s largest waterfall, with a drop of about 30 m and a length of about 100 m, is sometimes called the “Boso Niagara.” A walkway is maintained so you can get close to the basin area.

When to Go for Foliage and Greenery

Autumn colors are typically late November to early December, when areas like Awamata Falls, Ozawamata Falls, and Kengai-kyo turn vibrant. In spring (April–May), fresh greenery feels especially crisp.

Relax in Hot Springs

The area is known for iron-rich “kuroyu” (black hot spring water), and you can unwind at hot springs such as Takimien Kenko Mura Goryaku no Yu.

Access by Train

Tokyo Station → Goi Station → Kominato Railway to Yoro Keikoku Station is around 2 hours 30 minutes (varies by transfers and time of day). From Chiba Station, about 1 hour 40 minutes is a rough guide.

By Car and Crowd Tips

Via the Aqua-Line, it’s about 30 minutes from the Tateyama Expressway “Ichihara IC.” There are free and paid parking areas nearby, and arriving early is recommended during foliage season.

For the latest information, please refer to official announcements or check on site.

What Is Yōrō Valley? Chiba Nature & Hiking Guide

Yōrō Valley (Yōrō Keikoku), stretching from Ōtaki Town in Isumi District to Ichihara City in Chiba Prefecture, is a treasure trove of nature known as one of the scenic areas on the Bōsō Peninsula.

Despite being only about 2 hours from central Tokyo, it is a nature-rich sightseeing destination where you can enjoy beautiful scenery in every season, hiking, and hot springs.

It is especially known for its autumn leaves, which reach their best season relatively late, and many visitors come from late November to early December.

In this article, we will introduce Yōrō Valley highlights, things to do, and access information in detail!


Best Things to Do in Yōrō Valley

1. Walk the hiking courses in the valley

Yōrō Valley has several hiking courses that can be enjoyed by beginners and advanced hikers alike.

Many routes pass along rivers, waterfalls, and forests, making it a relaxing spot full of fresh negative ions.

Recommended hiking courses:

  • "Waterfall walking trail around Awamata Falls: about 2 km (Awamata Falls to around Ozawamata Falls)"
  • "Daifukuzan-Umegase Course: about 12 km (for experienced hikers / about 5 hours)"

Due to typhoons and other conditions, some sections of the walking trails may be closed or restricted.

Be sure to check trail conditions before visiting.

Each course offers beautiful scenery and unusual geological layers, making them great for photography as well.

2. Powerful and impressive: Awamata Falls

One of the highlights of Yōrō Valley is Awamata Falls (Awamata-no-Taki).

With a drop of about 30 m and a length of about 100 m, it is one of the largest waterfalls on the Bōsō Peninsula, and is known as a name-taki (sheet-like sliding waterfall), where water glides down a gently sloped rock surface.

Highlight points:

  • A walking path is maintained so you can get close to the waterfall basin
  • Especially beautiful during the autumn foliage season (late November to early December)
  • After rainy days when the water volume is high, it becomes even more dramatic!

There are benches nearby as well, so it is also recommended to relax and enjoy the waterfall at a leisurely pace.

3. Autumn leaves and fresh greenery in spring

Yōrō Valley is known as a sightseeing spot where you can enjoy autumn leaves until relatively late in the season.

From late November to early December, maple trees color the valley in red and yellow.

During the foliage season, illuminations are sometimes held, allowing visitors to enjoy magical autumn leaves at night.

Autumn foliage spots:

  • Awamata Falls
  • Ozawamata Falls
  • Umegase Valley
  • Along Nakase Walking Trail

Also, the fresh green season in spring (April to May) is extremely beautiful, and the valley covered in vibrant greenery is perfect for refreshing yourself.

4. Relax in Yōrō Valley Onsen

Yōrō Valley has a rare natural hot spring in the Kanto region known as "kuroyu" (black hot spring water).

This hot spring is brown-colored water rich in plant-derived humic acid, and it is said to be good for skin care and fatigue recovery.

Recommended hot springs:

  • Takimien Kenkōmura Goriyaku-no-Yu (A day-use hot spring facility with open-air baths)
  • Yōrō Onsen Hidden Inn "Takimien" (You can bathe while viewing a waterfall)
  • Keikoku Bettei "Mochinoki" (Enjoy a private hot spring surrounded by nature)

There are many day-trip hot spring facilities, so soaking in an onsen after hiking is a great way to relax and recover!

5. Local food around Yōrō Valley

After hiking or enjoying the hot springs, be sure to try some excellent local food too!

Recommended food:

  • Fresh local river fish (salt-grilled ayu and yamame)
  • Handmade soba (Flavorful local buckwheat noodles with a firm texture)
  • Homemade game dishes (wild boar hot pot, venison dishes)
  • Seasonal fruits (you can also enjoy strawberry picking and blueberry picking nearby!)

There are restaurants scattered along the valley, so meals while surrounded by nature are especially enjoyable.

6. Visit the Chibanian geomagnetic reversal strata

Near Yōrō Valley, there is the National Natural Monument "Tabuchi Geomagnetic Reversal Strata in the Yōrō River Basin (Chibanian)", which records a geomagnetic reversal from about 770,000 years ago.

It is a valuable spot where you can feel Earth's history, located about a 25-minute walk from Kominato Railway Tsukizaki Station.


How to Get to Yōrō Valley

Access by Train (Public Transportation)

  • From Tokyo Station:
  • JR Uchibō Line to Goi Station → Kominato Railway to Yōrō-keikoku Station (about 2 hours)
  • From Chiba Station:
  • JR Uchibō Line to Goi Station → Kominato Railway to Yōrō-keikoku Station (about 1 hour 30 minutes)

The Kominato Railway is a local line with retro trains, and the scenery from the train windows is part of the fun of the trip.

From Yōrō-keikoku Station, Awamata Falls is about 15 minutes by local bus.

Access by Car (Recommended!)

  • From Tokyo area:
  • Shuto Expressway Bayshore Route → Tokyo Bay Aqualine → Tateyama Expressway "Ichihara IC" → about 30 minutes
  • From Chiba area:
  • Tateyama Expressway "Ichihara IC" → about 30 minutes

Parking information:

  • Multiple free and paid parking lots are available nearby
  • The autumn foliage season (late November to early December) gets very crowded, so arriving early is recommended!


Useful Information for Travelers

Wi-Fi and Facility Information

  • Free Wi-Fi is available around Yōrō-keikoku Station
  • English and Chinese pamphlets are available at the tourist information center
  • Restrooms are available at Yōrō-keikoku Station and near parking areas

Clothing and What to Bring

  • Comfortable walking shoes (sneakers or trekking shoes) are essential for hiking
  • Some parts of the walking trails may be wet, so non-slip shoes are recommended
  • Bring insect repellent in summer and warm clothing in winter

Language Support

  • There is a tourist information center with English support (in front of Yōrō-keikoku Station)
  • Some accommodations can provide multilingual support


Summary

Yōrō Valley is a hidden gem in the Kanto region where you can enjoy hiking, autumn leaves, hot springs, and local food.

It is easy to access from Tokyo and perfect for a day trip!

One of Yōrō Valley's biggest attractions is that you can enjoy autumn scenery even in December, as it is a spot where fall colors can be seen relatively late in the season.


Frequently Asked Questions

A. Yoro Keikoku is a scenic valley along the Yoro River in Chiba Prefecture, known for waterfalls, walking trails, and scattered hot-spring inns. Many sections stay shaded and can feel cooler than expected, so a light outer layer is comfortable in any season. Some areas can have weak phone reception, so saving your map in advance is reassuring.
A. The peak is commonly described as late November to early December. Morning light comes in at an angle and makes photos look more three-dimensional, but cold conditions can leave paths damp and slippery, so shoes with good grip help. After rain, colors can look deeper, but mud can dirty your feet, so spare socks keep things comfortable.
A. By train, the basic route is JR to Goi Station, then transfer to the Kominato Railway and head to Yoro Keikoku Station. Train frequency can be limited at certain times, so choosing an early outbound trip and a return with plenty of buffer helps you avoid losing time on site. If you want a seat, it helps to decide where to line up at the starting station.
A. Parking at Yoro Keikoku Station is 500 yen per visit, and there are spaces for 40 standard cars. During autumn foliage season, it fills up early, so arriving earlier is the key. You’ll likely spend a long time walking in the valley, so leaving extra drinks in the car can be a big help when you return.
A. Highlights typically include the waterfall area and the valley walking trails. If you’re short on time, targeting just the waterfall works well, and if you want multiple spots, allowing at least half a day gives you breathing room. Decide your return train time or parking exit timing first and reserve the last 30 minutes for moving so you don’t feel rushed. Photos are often easier in the morning when there are fewer people.
A. Rain can increase the water flow and make the scenery more dramatic, but trails can get muddy and slippery. A raincoat and spare socks make the visit more comfortable. When water levels rise, don’t force your way down to the riverside, and never go beyond fences for safety. If you’re driving, a plastic bag is handy because floor mats get dirty easily.
A. The valley has lots of shade, and even in summer the area around your feet can feel cool on some days. Along with comfortable walking shoes, a light outer layer and insect repellent are helpful. Some sections have few shops, so it’s best to secure drinks near the station or parking area first. A spare phone battery helps prevent running out of power for photos and maps.
A. On weekends during peak foliage, parking and narrow roads can get congested, so weekdays or very early hours are best if possible. Mornings are easier for photos before crowds build, and taking a break at a hot spring or cafe around midday creates a comfortable “time shift.” If you want to avoid traffic on the way back, leaving before late afternoon is safer.

Nearby Recommended Spots

Check out recommended articles in this area

※ The article content is based on information at the time of writing and may differ from the current situation. In addition, we do not guarantee the accuracy or completeness of the published content, please understand.