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This 174 km route runs from Train and Bus Museum to Tsumagoi, passing through Kanagawa, Gunma, Nagano, Saitama, and Tokyo. In the past 30 days, 41 bear sightings were reported within 5 km of the route. The past 7 days account for 5 of them. The latest sighting was reported 1 day ago near Tsumagoi, Gunma.
This is an active bear corridor. Rerouting or rescheduling your hike is strongly advised.
8 places within 1 km of your route, passing through Kanagawa, Gunma, Nagano, Saitama, Tokyo.
Tsumagoi, Gunma
Annaka 松井田町土塩, Gunma
Annaka 松井田町五料, Gunma
Size: adult and cub
Karuizawa 大字長倉, Nagano
Size: Adult
Karuizawa, Nagano
Size: cub (juvenile)
Karuizawa 大字長倉, Nagano
Size: adult
Karuizawa 大字追分, Nagano
Size: Adult
Karuizawa, Nagano
Shimonita Nishinomaki, Gunma
Tsumagoi Kanbara, Gunma
Size: Adult
Karuizawa 大字追分, Nagano
Size: Unknown
Karuizawa 大字長倉, Nagano
Tomioka 神成, Gunma
Around 17:45 on 2026-06-14, a bear was sighted in Nagakura, Karuizawa Town, Nagano Prefecture.
Karuizawa 中軽井沢, Nagano
Around 21:50 on 2026-06-13, a bear was sighted in Yokokawa, Matsuidamachi, Annaka, Gunma.
Annaka 松井田町横川, Gunma
Annaka 松井田町土塩, Gunma
Tomioka 妙義町菅原, Gunma
Annaka 松井田町土塩, Gunma
Size: Adult
Karuizawa 大字長倉, Nagano
Size: adult (fully grown)
Karuizawa 大字長倉, Nagano
Size: Adult
Karuizawa, Nagano
Size: juvenile
Karuizawa 中軽井沢, Nagano
An animal believed to be a bear was sighted in Yokokawa, Matsuida-machi, Annaka City.
Annaka 松井田町横川, Gunma
Karuizawa, Nagano
A bear was sighted in Nagakura, Karuizawa Town, around 9:30 AM on June 5.
Karuizawa 中軽井沢, Nagano
Size: Adult
Karuizawa, Nagano
Size: adult with cub
Karuizawa, Nagano
On 2026-06-02 around noon, a bear was sighted in Karuizawa, Karuizawa Town, Nagano Prefecture.
Karuizawa 大字軽井沢, Nagano
Size: Adult (fully grown)
Karuizawa 大字追分, Nagano
Tsumagoi, Gunma
One bear was sighted in Oiwake, Karuizawa Town. A nearby resident reported seeing a large black object moving in the forest.
Karuizawa 大字追分, Nagano
One bear was sighted in Karuizawa, Karuizawa Town; the area has nearby homes and the bear was about 1 meter long.
Karuizawa 中軽井沢, Nagano
Tsumagoi Kanbara, Gunma
Size: unknown
Karuizawa 大字追分, Nagano
Size: adult
Karuizawa 大字長倉, Nagano
Size: Adult (fully grown)
Karuizawa 大字長倉, Nagano
Size: adult (fully grown)
Karuizawa 大字長倉, Nagano
Size: adult
Karuizawa 大字長倉, Nagano
Around 4:00 PM on May 28, a bear was sighted in Nagakura, Karuizawa Town.
Karuizawa 中軽井沢, Nagano
Size: Adult
Karuizawa 大字長倉, Nagano
Fujioka Shimohino, Gunma
Peak activity at 15:00 with 3 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, 41 bear sightings were reported within 5 km of the route. The past 7 days account for 5 of them.
The latest sighting was reported 1 day ago near Tsumagoi, Gunma.
Recent sightings on this route peak around 15:00. Bears are generally most active at dawn and dusk.
This 174 km route runs from Train and Bus Museum to Tsumagoi, passing through Kanagawa, Gunma, Nagano, Saitama, and Tokyo. In the past 30 days, 41 bear sightings were reported within 5 km of the route. The past 7 days account for 5 of them. The latest sighting was reported 1 day ago near Tsumagoi, Gunma. This is an active bear corridor. Rerouting or rescheduling your hike is strongly advised.
