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This 254 km route runs from Adachi Ward, Tokyo to Nagano, passing through Tokyo, Nagano, Gunma, and Saitama. In the past 30 days, 49 bear sightings were reported within 5 km of the route. The past 7 days account for 6 of them. The latest sighting was reported 2 days ago near Saku, Nagano.
This is an active bear corridor. Drive through with full caution, but rerouting is the safer choice.
11 places within 1 km of your route, passing through Tokyo, Nagano, Gunma, Saitama.
Around 13:10 on 2026-07-10, a bear was sighted in Shiga, Saku City, Nagano Prefecture.
Saku, Nagano
On 2026-07-10 in Shinkoda, Saku City, Nagano, a bear was sighted.
Saku Arakoda, Nagano
Size: Unknown
Ueda Sanadamachi-Motohara, Nagano
Size: juvenile
Karuizawa, Nagano
Size: Adult
Karuizawa, Nagano
Size: unknown
Ueda Tonoshiro, Nagano
A bear was sighted in Hatsuji, Karuizawa Town, Nagano, around 10:20 on July 6.
Karuizawa 大字発地, Nagano
Size: juvenile
Nagano Nakazone, Nagano
Tomioka 妙義町上高田, Gunma
Size: adult
Karuizawa, Nagano
Size: Adult
Sakaki Minamijo, Nagano
In a forest in Konabe, Nagano City, a man was accidentally hit in the left shoulder by a hunting rifle while a bear was being culled.
Nagano Konabe, Nagano
On 2026-07-04 afternoon, a bear was sighted in Hosshi, Karuizawa Town, Nagano Prefecture.
Karuizawa 大字発地, Nagano
Shimonita, Gunma
Around 7 PM on July 3, a bear was sighted in Nishinomaki, Shimonita Town.
Shimonita Nishinomaki, Gunma
Around 8:00 on 2026-07-03, a bear was sighted in Hotchi, Karuizawa Town, Nagano Prefecture.
Karuizawa 大字発地, Nagano
Size: adult with cub(s)
Nagano Konabe, Nagano
Size: Adult
Karuizawa, Nagano
A bear was sighted in Matsuida-machi Doshio, Annaka City.
Annaka 松井田町土塩, Gunma
Size: Adult
Karuizawa, Nagano
Size: Adult
Karuizawa, Nagano
Around 3:00 PM on 2026-06-30, one bear was sighted in Wakatsuki-Nishijo, Nagano City.
Nagano Wakatsuki-Nishijo, Nagano
Size: Unknown
Ueda Ueno, Nagano
Size: Adult (fully grown)
Karuizawa, Nagano
A sighting report said one bear was in a drainage canal and its face was visible in Amori-Koichi, Nagano City.
Nagano Kawanakajimamachi-Yotsuya, Nagano
Size: Adult (fully grown)
Nagano Shinonoi-Okada, Nagano
Size: adult
Karuizawa 大字追分, Nagano
Size: Unknown
Ueda Tonoshiro, Nagano
Size: Adult
Iizuna Jizokubo, Nagano
A bear was sighted in Kawakami, Iizuna Town, Nagano Prefecture, around 05:45 on 2026-06-25.
Iizuna, Nagano
Size: Unknown
Komoro Kamasu, Nagano
Size: Adult
Iizuna Yanagisato, Nagano
Size: Adult
Nagano Sakura, Nagano
Shimonita, Gunma
Size: adult (fully grown)
Ueda, Nagano
Annaka 松井田町上増田, Gunma
Annaka 松井田町土塩, Gunma
Size: juvenile
Ueda, Nagano
Size: Juvenile
Ueda, Nagano
Annaka 松井田町五料, Gunma
Size: juvenile
Ueda, Nagano
Size: Adult
Karuizawa, Nagano
Size: Unknown
Miyota 大字塩野, Nagano
Size: juvenile
Nagano Uematsu, Nagano
Shimonita Nishinomaki, Gunma
Tomioka 神成, Gunma
Size: juvenile
Nagano Nakazone, Nagano
On the morning of 2026-06-15, a bear was sighted in Nakasone, Nagano City.
Nagano Nakazone, Nagano
Size: Adult
Nagano Matsushiromachi-Iwano, Nagano
Peak activity at 9:00 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, 49 bear sightings were reported within 5 km of the route. The past 7 days account for 6 of them.
The latest sighting was reported 2 days ago near Saku, Nagano.
Recent sightings on this route peak around 9:00. Bears are generally most active at dawn and dusk.
This 254 km route runs from Adachi Ward, Tokyo to Nagano, passing through Tokyo, Nagano, Gunma, and Saitama. In the past 30 days, 49 bear sightings were reported within 5 km of the route. The past 7 days account for 6 of them. The latest sighting was reported 2 days ago near Saku, Nagano. This is an active bear corridor. Drive through with full caution, but rerouting is the safer choice.
