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This 322 km route runs from Toyama to Shiki, passing through Toyama, Saitama, Gifu, Gunma, and Nagano. In the past 30 days, 91 bear sightings were reported within 5 km of the route. The past 7 days account for 13 of them. The latest sighting was reported 2 days ago near Azumino 豊科光, Nagano.
This is an active bear corridor. Rerouting or rescheduling your hike is strongly advised.
13 places within 1 km of your route, passing through Toyama, Saitama, Gifu, Gunma, Nagano.
A bear was sighted in Tazawa, Toyoshina, Azumino City on 2026-08-10 afternoon.
Azumino 豊科光, Nagano
Size: Unknown
Azumino 豊科光, Nagano
Size: Adult
Karuizawa 大字長倉, Nagano
Size: adult
Karuizawa 軽井沢, Nagano
Sightings of a mother bear and her cub(s)
Toyama, Toyama
Size: adult
Karuizawa 中軽井沢, Nagano
Size: Adult
Karuizawa, Nagano
Size: Unknown
Karuizawa 中軽井沢, Nagano
Size: adult (fully grown)
Karuizawa 軽井沢, Nagano
Sightings of a mother bear and her cub(s)
Toyama, Toyama
Size: Unknown
Karuizawa 軽井沢東, Nagano
Two bear-like animals were reportedly sighted in Musashino, Fukaya City.
Fukaya 緑台, Saitama
Size: adult
Azumino 穂高牧, Nagano
Size: Adult
Karuizawa 軽井沢, Nagano
Size: Adult
Azumino 穂高有明, 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
Spotted a mother bear and her cubs on the riverbank
Toyama, Toyama
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, Nagano
Three bears, including a parent and offspring, were sighted in Hongu, Toyama City.
Toyama, Toyama
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
Witnessed one bear cub crossing the road.
Tateyama, Toyama
One bear was sighted in Horigane Karasawa, Azumino City, around 10:35 on 2026-07-30.
Azumino 穂高柏原, Nagano
A bear was sighted in Akashina Nakagawate, Azumino City.
Azumino 明科中川手, Nagano
Size: juvenile
Azumino 穂高牧, Nagano
Annaka 松井田町人見, Gunma
Size: Unknown
Azumino 明科中川手, Nagano
Discovered bear footprints, droppings, etc.
Tateyama, Toyama
Size: adult (fully grown)
Azumino 穂高有明, Nagano
One bear was sighted in Hotaka Ariake, Azumino City.
Azumino 穂高有明, Nagano
In the morning of July 28, a bear sighting was reported in Oba, Toyama City.
Toyama, Toyama
Sighted something that appeared to be a bear
Toyama, Toyama
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: Unknown
Azumino 穂高有明, Nagano
In Hirota, Fuchu-machi, Toyama City, a resident saw an adult bear.
Toyama, Toyama
A bear was sighted in Goryo, Matsuidamachi, Annaka City around 8:00 on 2026-07-27.
Annaka, Gunma
Annaka, Gunma
Bear droppings were found in Yatsuo-machi Suwacho, Toyama City.
Toyama, Toyama
Discovered what appears to be bear feces
Toyama, Toyama
In Hirota, Fuchu-machi, Toyama City, a resident found bear footprints and traces of a watermelon being eaten.
Toyama, Toyama
Checked for bear tracks and signs of watermelon having been eaten.
Toyama, Toyama
In Suwamachi, Yatsuo-machi, Toyama City, bear droppings were found.
Toyama, Toyama
Size: adult
Karuizawa, Nagano
In Hirota, Fuchu-machi, Toyama City, three watermelons in a home garden were eaten by a bear and ruined.
Toyama, Toyama
Observed one adult bear
Toyama, Toyama
An adult bear was sighted in Fuchu-machi Araya, Toyama City.
Toyama, Toyama
Bear sighted
Toyama, Toyama
Bear footprints and droppings were found in Fuchu-machi Takahiduke, Toyama City.
Toyama, Toyama
A resident spotted a bear in Hirota, Futakuchi-cho, Toyama City, and bear tracks were later confirmed.
Toyama, Toyama
Confirmed bear tracks
Toyama, Toyama
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
Observed crossing the road toward the river
Tateyama, Toyama
Around 8:20 AM on 2026-07-24, one bear was sighted in Hatachi, Karuizawa Town, Nagano Prefecture.
Karuizawa 大字発地, Nagano
Size: Adult
Karuizawa 大字発地, 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: Adult
Karuizawa 大字長倉, Nagano
Sighted what appeared to be a bear.
Tateyama, Toyama
Around 00:30 on 2026-07-22, a bear was sighted in Hotakaariake, Azumino City, Nagano Prefecture.
Azumino 穂高有明, Nagano
Around 3:00 PM on July 22, a bear-like animal was sighted in Sotaniguchi, Tateyama Town.
Tateyama, Toyama
A bear was sighted in Mogusa, Karuizawa Town, Nagano Prefecture, around 7:15 a.m. on July 21.
Karuizawa 大字茂沢, Nagano
Size: Adult
Karuizawa 大字茂沢, Nagano
Size: Unknown
Karuizawa 大字長倉, Nagano
Sighted one bear
Tateyama, Toyama
Sightings of one cub
Toyama, Toyama
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
One bear was sighted in Maki, Toyama City, around 3 PM.
Toyama, Toyama
Around 21:00 on 2026-07-19, a bear was sighted in Hotaka Ariake, Azumino City, Nagano Prefecture.
Azumino 穂高有明, Nagano
Size: cub (young bear)
Karuizawa 中軽井沢, Nagano
Around noon on July 19, a bear was sighted in Hozotaki, Yatsuo-machi, Toyama City.
Toyama, Toyama
Size: Juvenile
Karuizawa 大字軽井沢, Nagano
Size: juvenile
Azumino 明科七貴, 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 (fully grown)
Karuizawa, 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
Peak activity at 7:00 with 7 incidents
Ursus thibetanus japonicus
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For mountain rescue, call 110 (police). They will coordinate with local rescue teams.
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In the past 30 days, 91 bear sightings were reported within 5 km of the route. The past 7 days account for 13 of them.
The latest sighting was reported 2 days ago near Azumino 豊科光, Nagano.
Recent sightings on this route peak around 7:00. Bears are generally most active at dawn and dusk.
This 322 km route runs from Toyama to Shiki, passing through Toyama, Saitama, Gifu, Gunma, and Nagano. In the past 30 days, 91 bear sightings were reported within 5 km of the route. The past 7 days account for 13 of them. The latest sighting was reported 2 days ago near Azumino 豊科光, Nagano. This is an active bear corridor. Rerouting or rescheduling your hike is strongly advised.
