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This 265 km route runs from Kijimadaira to Oyama, passing through Nagano, Saitama, Tochigi, and Gunma. In the past 30 days, 73 bear sightings were reported within 5 km of the route. The past 7 days account for 10 of them. The latest sighting was reported 2 days ago near Nagano Shinonoi-Ishikawa, Nagano.
This is an active bear corridor. Rerouting or rescheduling your hike is strongly advised.
1 places within 1 km of your route, passing through Nagano, Saitama, Tochigi, Gunma.
Size: adult (fully grown)
Nagano Shinonoi-Ishikawa, Nagano
Size: adult and cub
Ogawa 桐山, Nagano
Size: Adult
Yamanouchi Yomase, Nagano
Size: Adult
Yamanouchi Hirao, Nagano
Size: Unknown
Ogawa 桐山, Nagano
Size: Adult
Ogawa Oneyama, Nagano
Size: adult (fully grown)
Yamanouchi Yomase, Nagano
Size: adult with cub(s)
Hakuba, Nagano
Size: Adult
Hakuba, Nagano
Size: adult
Ogawa Oneyama, Nagano
Size: unknown
Nakano Shinoi, Nagano
Size: Adult (fully grown)
Yamanouchi, Nagano
Size: adult
Yamanouchi Yomase, Nagano
Size: Unknown
Kijimadaira Ogo, Nagano
Size: adult and cub
Ōmachi, Nagano
Size: Adult
Yamanouchi, Nagano
Size: Adult
Nakano Shinoi, Nagano
Size: adult with cub(s)
Nagano Shinonoi-Utabi, Nagano
A bear was sighted in Niino, Nakano City, Nagano Prefecture on 2026-07-18.
Nakano Shinno, Nagano
Size: Adult
Nagano Shobu-ko, Nagano
Size: Juvenile
Ōmachi 中ノ関, Nagano
Size: juvenile
Hakuba, Nagano
Size: juvenile
Kijimadaira Kamikijima, Nagano
Size: Juvenile
Omi, Nagano
Size: juvenile
Ueda, Nagano
Size: Adult
Karuizawa 軽井沢, Nagano
Location: 36.36815° N, 138.59869° E We encountered 1 adult female bear with 2 cubs. The adult bear made a bluff charge toward us (stopped around 5 meters away) while the cubs ran up the hill. They then moved away together.
Karuizawa 中軽井沢, Nagano
Size: adult with cubs
Karuizawa 大字長倉, Nagano
Size: Adult
Karuizawa 軽井沢, Nagano
Annaka 上後閑, Gunma
A bear was sighted in Kamigokan, Annaka City, Gunma Prefecture, on 2026-08-01.
Annaka 上後閑, Gunma
Size: Adult
Karuizawa 中軽井沢, Nagano
Around 1:00 on July 31, a bear was sighted in Niibori, Matsuida-machi, Annaka City.
Annaka 松井田町新堀, Gunma
Annaka 松井田町新堀, Gunma
Size: Adult (fully grown)
Karuizawa 中軽井沢, Nagano
Annaka 松井田町二軒在家, Gunma
A bear was sighted in Matsuidamachi Matsuida, Annaka City, Gunma Prefecture, around 12:45 on July 30.
Annaka 松井田町松井田, Gunma
Annaka 松井田町人見, Gunma
Size: Adult
Ogawa Oneyama, Nagano
Size: adult (fully grown)
Sakaki, Nagano
Around 1:00 PM on 2026-07-28, one bear was sighted in Karuizawa, Karuizawa Town, Nagano Prefecture.
Karuizawa 大字軽井沢, Nagano
Size: juvenile
Sakaki, Nagano
A bear was sighted in Goryo, Matsuidamachi, Annaka City around 8:00 on 2026-07-27.
Annaka, Gunma
Annaka, Gunma
Size: Adult
Hakuba, Nagano
Size: Unknown
Ueda, Nagano
Size: adult and cub
Nagano Ooka-otsu, Nagano
Size: adult
Ogawa Oneyama, Nagano
A bear was seen moving in Matsuidamachi-Kamimasuda, Annaka City, around 9:00 PM on July 25.
Annaka 松井田町上増田, Gunma
Annaka 松井田町土塩, Gunma
Size: juvenile
Karuizawa 大字長倉, Nagano
Size: juvenile
Ōmachi, Nagano
Around 8:20 on 2026-07-24, a bear was sighted in Nagakura, Karuizawa Town, Nagano Prefecture.
Karuizawa 中軽井沢, Nagano
Size: Unknown
Ueda, Nagano
Size: Adult
Karuizawa 大字長倉, Nagano
On 2026-07-21 around 05:30, a bear was sighted in Shinshu-shinmachi Nakamaki, Nagano City.
Nagano, Nagano
Size: adult and cub
Ōmachi, Nagano
Size: adult with cub(s)
Nagano, Nagano
Size: Unknown
Karuizawa 大字長倉, Nagano
A bear was sighted in Karuizawa, Karuizawa Town, Nagano.
Karuizawa 大字軽井沢, Nagano
Annaka 松井田町行田, Gunma
One bear was seen moving in Matsuida-cho Gyoda, Annaka City, Gunma.
Annaka 松井田町行田, Gunma
Size: cub (young bear)
Karuizawa 中軽井沢, Nagano
Size: Unknown
Ueda, Nagano
Size: Juvenile
Karuizawa 大字軽井沢, Nagano
Size: Unknown
Ueda, Nagano
Size: cub (young animal)
Karuizawa 大字軽井沢, Nagano
Size: Adult
Karuizawa 大字軽井沢, Nagano
Size: juvenile
Karuizawa 大字長倉, Nagano
Size: Adult
Ueda 真田町傍陽, Nagano
Size: Juvenile
Ōmachi 中ノ関, Nagano
Size: adult and cub
Karuizawa, Nagano
Size: juvenile
Karuizawa 大字軽井沢, Nagano
On the way back from the Kirizumi Onsen parking lot, just before the upstream dam on the Kirizumi River, at a right-hand curve, it suddenly jumped out onto the road from the right (mountain) side and ran straight across toward the left (river) side, which is a cliff. About 5 m in front of the vehicle.
Annaka 松井田町坂本, Gunma
It looked like a large dog crossed the area, but there was no owner, and I realized it was a wild animal. It was not a boar, deer, or badger. Judging from the size, gait, and silhouette, I think it may have been a young Asiatic black bear (Ursus thibetanus), so I am reporting it. Also, while walking nearby I found a black, glossy, flattened droppings. After examining it, I believe it is likely from a bear.
Karuizawa 大字軽井沢, Nagano
Around 9:30 on July 13, a bear was sighted in Togura, Chikuma City, Nagano, and was captured.
Chikuma Togura, Nagano
Size: juvenile
Hakuba, Nagano
Size: Adult
Chikuma Togura, Nagano
I was riding a motorcycle on a tour, and it was just at the spot where the guardrail goes into the mountain, so I didn't take any photos and the location is not exact. I was heading west and report an approximate location based on my memory that it was a left-hand curve a little past the Megane Bridge parking area, at a place with a white guardrail.
Annaka, Gunma
Peak activity at 1:00 with 2 incidents
Ursus thibetanus japonicus
Safety picks and trail essentials, top-rated on Amazon and Rakuten.
For mountain rescue, call 110 (police). They will coordinate with local rescue teams.
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In the past 30 days, 73 bear sightings were reported within 5 km of the route. The past 7 days account for 10 of them.
The latest sighting was reported 2 days ago near Nagano Shinonoi-Ishikawa, Nagano.
Recent sightings on this route peak around 1:00. Bears are generally most active at dawn and dusk.
This 265 km route runs from Kijimadaira to Oyama, passing through Nagano, Saitama, Tochigi, and Gunma. In the past 30 days, 73 bear sightings were reported within 5 km of the route. The past 7 days account for 10 of them. The latest sighting was reported 2 days ago near Nagano Shinonoi-Ishikawa, Nagano. This is an active bear corridor. Rerouting or rescheduling your hike is strongly advised.
